<p class="text-steel f-b1 md-max:mb-d">At Mainspring we believe the fastest path to the net-zero carbon grid is vastly increasing the amount of solar and wind power while building a supporting clean energy system that ensures affordability and multi-day, cross-season resilience. Getting there requires flexible, scalable, local technologies that can adapt to the shifting grid landscape – including the transition from natural gas to renewable fuels like biogas, green ammonia, and green hydrogen.</p>
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<p class="text-steel f-b1">The Mainspring Linear Generator delivers an unmatched level of flexibility for the transition ahead. It’s local so you can site where power is needed, it’s dispatchable so you can ramp up and down to complement renewables, and it’s fuel-flexible so you can operate on the cleanest fuels available today and in the future. Our products are already at work at Fortune 500 customer sites, accelerating the arrival of the net-zero carbon grid.</p>
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Flexible, scalable energy systems accelerating the transition to a net-zero carbon grid.

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring is seeking Staff Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. This role will involve not only owning engineering development projects but also taking a leadership role in guiding technical decisions and influencing the design process across teams. You will manage and mentor cross-functional teams to ensure that key electrical subsystems meet challenging technical requirements from concept through manufacturing launch. In some cases, this role may directly manage engineers, providing leadership while ensuring that all team members work towards a cohesive project goal. Ideal candidates will have a strong combination of technical expertise, leadership abilities, and the drive to solve complex problems in a collaborative environment.</span></div><br><br><h3>Core responsibilities</h3><ul><li>Lead brainstorming and technical review sessions to develop innovative solutions that enhance the performance and cost-efficiency of the Linear Generator and electrical subsystems</li><li>Take full ownership of the design, optimization, and execution of key electrical hardware, balancing cost reduction, safety improvements, and system-level reliability</li><li>Collaborate with reliability and test teams to validate systems and components, ensuring fast iteration cycles and incorporating feedback to drive the next-generation deployment of the Linear Generator</li><li>Collaborate cross-functionally with electrical engineering, manufacturing engineering, NPI, and external suppliers to deploy new designs into production, ensuring all systems meet the necessary performance and manufacturability requirements</li><li>Lead the development cycle of electrical hardware, including requirements development, prototyping, testing, iteration, and tooling, ensuring project milestones are met and resources are allocated effectively</li><li>Oversee the execution of the project by guiding and coordinating efforts across multiple engineering disciplines to maintain a cohesive direction</li><li>Mentor and support junior engineers, guiding them through technical challenges, offering advice on design strategies, and helping to develop their skills while working towards project goals</li><li>Proactively prioritize activities, balancing project timelines, resources, and risks to ensure consistent delivery on critical engineering initiatives</li></ul><h3>Qualifications</h3><ul><li>Degree: BS or MS in Mechanical Engineering or a similar engineering field from an accredited institution. Experience and degree will determine the level, with the following minimum requirements: Staff Level: BS + 11 years or MS + 10 years</li><li>Proven experience taking ownership of electrical enclosure and/or cable design, including architectural decisions and managing cross-functional teams or guiding team efforts in both disciplines</li><li>Strong expertise in sheet metal design for medium-volume production, electrical component specification, mechanical design for electrical systems, and design-for-manufacturability challenges</li><li>A solid understanding of electrical engineering principles and thermal modeling, and the ability to integrate them effectively into larger system designs</li><li>Extensive experience in SolidWorks and PDM (or a similar CAD version control system). Experience with CFD, FEA, and programs like SolidWorks Flow Simulation or Ansys is a plus</li><li>Demonstrated ability to manage complex technical decisions, influence the direction of designs, and coordinate with teams to achieve successful outcomes</li><li>A strong desire to mentor and develop junior engineers, providing guidance to help them grow and succeed in their roles</li><li>Passion for creating innovative and cost-effective solutions to enable the large-scale deployment of zero-carbon energy technologies</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Staff Mechanical Design Engineer - Electromechanical

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b><span style="font-size:16px;">Job Overview</span></b></div><div><br></div><div><span style="font-size:16px;">This is a software engineering role with emphasis on embedded systems.</span></div><div><span style="font-size:16px;">In the first week, you will close your first issue and review a colleague's merge-request.</span></div><div><span style="font-size:16px;">In the first month, you will deliver your first driver for a new piece of hardware.</span></div><div><span style="font-size:16px;">In the first year, you will contribute to the creation of our next generation architecture to enable continued expansion of our suite of sensors and actuators.</span></div><br><br><h3>Responsibilities</h3><ul><li>Lead the successful development of embedded software for various components in the system</li><li>Mentor and possibly supervise junior members of the team</li><li>Invent communication protocols for use by in-house designed I/O devices</li><li>Select computer and network hardware to balance our performance needs vs. cost</li><li>Write emulators and unit-tests for continuous integration</li><li>Collaborate with Controls and Electrical to drive integrated hardware/software projects from initial research through to product release</li><li>Contribute to the definition of processes and best-practices for the overall software development life cycle</li></ul><h3>Qualifications</h3><ul><li>Several years experience programming for embedded hardware systems including design, implementation, architecture, and testing (real-time a plus)</li><li>Passion for software engineering best practices (preferably in C++)</li><li>Extensive know-how on embedded Linux systems</li><li>Experience with system architecture definition and system design</li><li>Project experience with building and maintaining CI pipelines and Docker</li><li>Drive to close issues and the track record to prove it (and open them when you find them)</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Staff Embedded Software Engineer

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b><span style="font-size:18px;">Job Overview</span></b></div><div><br></div><div><span style="font-size:16px;">The Sr. Sales Engineer- Data Center Markets, reports to the Senior Sales Engineering Manager. This role is expected to serve as the technical expert for developing cost estimates, preliminary designs, and system architecture. The Sales Engineering team is a subset of the Project Delivery team. A key enabler of Mainspring’s mission is the ability of this team to deliver solutions based on our linear generator technology that solve customer problems in the cross-section of resiliency and clean power supply.</span></div><br><br><h3>Responsibilities</h3><ul><li>Deliver the highest value solution to customers optimizing cost-effective and robust design solutions</li><li>Assist sales team in customer calls, on an as need basis, be a key contributor for customer interactions during sales cycle</li><li>Travel to customer sites to perform site walks to determine site conditions and challenges for estimation and installation</li><li>Collaborate with internal technical teams to create proposal documentation package (site/equipment layout diagrams, sales and estimating single line diagrams, etc.), thereby supporting the sales cycle</li><li>Interface with internal cross-functional teams to understand and communicate technical requirements to customer</li><li>Present turn keys project solutions with pricing estimates assumptions and exclusions</li><li>Pivot and problem solve and identify solutions based on the customer requirements</li><li>Deliver cost estimates and supporting documentation for multiple projects (5+) at a time, to project stakeholders</li><li>Collect market data (BOM cost, commodity cost, wire and concrete market conditions ) and present to projects, sales and business development leads.</li><li>Support the business development team during contract negotiations</li><li>Be available as a consult for the project management during execution and installation</li><li>Demonstrate an understanding of the datacenter market segment and industry as a whole:</li><li>Understand datacenter operations, building power generation blocks, availability &amp; reliability of datacenter power</li><li>Have an understanding of combustion turbines &amp; medium speed engines</li></ul><h3>Qualifications</h3><ul><li>Bachelor's degree in Engineering (Electrical or Mechanical preferred)</li><li>Over 7 years of experience with sales engineering, front-end engineering and design (FEED), applications engineering, cost estimating, in electrical power systems or related industry</li><li>Experience in distributed energy, solar, batteries, fuel cells, microgrids, a plus</li><li>Ability to problem-solve, think creatively, and timely resolve personnel and project related issues</li><li>Excellent organization, documentation, and communication skills</li><li>Demonstrated experience with and full understanding of the following:</li><li>System and component level solutions</li><li>Proposal development</li><li>EPC construction practices</li><li>Bill of materials</li><li>Electrical interconnection process/gas upgrade process with utilities (plus but not critical)</li><li>Estimating</li><li>Ability to travel nationally 25% max and be the face of Mainspring for site visits and sales presentations.</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Senior Sales Engineer - Data Center Markets

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is seeking a talented Senior Mechanical Engineer to join the team responsible for the alignment of critical components for our innovative Linear Generator technology. This challenging role requires creativity and a broad range of skills to make a significant impact on our clean energy solution for a part that is critical to the success of the company.</span></div><br><br><h3>Responsibilities</h3><ul><li>Lead essential development efforts that align and maintain alignment of major components, including design, 3D CAD modeling (Solidworks), engineering analysis (FEA tools like ANSYS), testing, root cause investigation and comprehensive documentation</li><li>Collaborate with cross-functional teams (Electrical Engineering, Controls, Manufacturing, Suppliers) to ensure seamless subsystem integration, performance, and new product introduction (DFM/DFA, work instructions, tooling/fixtures)</li><li>Plan and execute rigorous verification and validation testing to ensure designs meet all requirements (functional, durability, safety, reliability)</li><li>Provide technical guidance to junior engineers and technicians, and contribute to the continuous improvement of engineering processes, tools, standards, and best practices</li><li>Stay current on advancements in mechanical engineering relevant to power generation, and identify opportunities to reduce cost, improve performance, and increase reliability as Mainspring scales its technology</li><li>Uphold and further Mainspring's mission to create clean, affordable, and reliable power generators that accelerate the world's transition to a sustainable energy future</li></ul><h3>Education and Experience</h3><ul><li>Bachelor's or Master's degree in Mechanical Engineering or similar field</li><li>6+ years as a professional mechanical design engineer</li><li>Delivered products as a technical lead through full design lifecycles from concept to manufacturing support, preferably in industrial equipment, power generation, or electromechanical machines</li><li>Self-starter with a proven ability to deliver functional designs in a rapid development environment and a track record of innovation and continuous improvement</li></ul><h3>Technical Skills</h3><ul><li>Proficiency in 3D CAD modeling (SolidWorks preferred), engineering drawing creation (GD&amp;T), and tolerance stack analysis. Experience with PDM or similar CAD version control systems.</li><li>Knowledge of mechanical design principles, materials, and manufacturing processes (sheet metal, welding, casting). Ability to identify and resolve design-for-manufacturability issues.</li><li>Hands-on experience with mechanical prototyping, assembly, and testing. Familiarity with FEA, CFD, and thermal analysis tools.</li><li>Expertise in bolted joints, thermal impacts on structures, and design for severe vibration environments is a plus.</li></ul><h3>Soft Skills</h3><ul><li>Strong problem-solving, creative thinking, communication, and collaboration skills for effective cross-functional teamwork.</li><li>Ability to work independently, manage multiple projects in a fast-paced environment, and demonstrate leadership and mentoring abilities.</li><li>Passion for clean energy and a commitment to creating a sustainable world.</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Senior Mechanical Engineer - Alignment

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring is seeking Senior Mechanical Design Engineers with a focus on designing electrical enclosures and cables while improving functionality and system-level performance. In this role, you will lead projects from setting requirements, designing, conducting cross functional reviews, coordinating testing and release to ensure that key electrical subsystems meet challenging technical requirements with a potential for direct reports. Ideal candidates will have a strong combination of technical expertise and the drive to solve complex problems in a collaborative environment.</span></div><br><br><h3>Core responsibilities</h3><ul><li>Lead brainstorming and technical review sessions to develop innovative solutions that enhance the performance and cost-efficiency of the Linear Generator and electrical subsystems</li><li>Take full ownership of the design, optimization, and execution of key electrical hardware, balancing cost reduction, safety improvements, and system-level reliability</li><li>Collaborate with reliability and test teams to validate systems and components, ensuring fast iteration cycles and incorporating feedback to drive the next-generation deployment of the Linear Generator</li><li>Collaborate cross-functionally with electrical engineering, manufacturing engineering, NPI, and external suppliers to deploy new designs into production, ensuring all systems meet the necessary performance and manufacturability requirements</li><li>Lead the development cycle of electrical hardware, including requirements development, prototyping, testing, iteration, and tooling, ensuring project milestones are met and resources are allocated effectively</li><li>Mentor and support junior engineers, guiding them through technical challenges, offering advice on design strategies, and helping to develop their skills while working towards project goals</li></ul><h3>Qualifications</h3><ul><li>Degree: BS or MS in Mechanical Engineering or a similar engineering field from an accredited institution. Experience and degree will determine the level, with the following minimum requirements: Senior: BS + 6 years or MS + 5 years</li><li>Proven experience taking ownership of electrical enclosure and/or cable design, from initial design to launch and managing cross-functional teams</li><li>Strong expertise in sheet metal design for medium-volume production, electrical component specification, mechanical design for electrical systems, and design-for-manufacturability challenges</li><li>A solid understanding of electrical engineering principles and thermal modeling, and the ability to integrate them effectively into larger system designs</li><li>Extensive experience in SolidWorks and PDM (or a similar CAD version control system). Experience with CFD, FEA, and programs like SolidWorks Flow Simulation or Ansys is a plus</li><li>Demonstrated ability to manage complex technical decisions, influence the direction of designs, and coordinate with teams to achieve successful outcomes</li><li>Passion for creating innovative and cost-effective solutions to enable the large-scale deployment of zero-carbon energy technologies</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Senior Mechanical Design Engineer - Electromechanical

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><br><br><h3>Responsibilities</h3><ul><li>Contribute to developing and optimizing key mechanical components and subsystems to drive down cost, improve performance, and enhance system reliability</li><li>Gain hands-on experience with prototyping, testing, and debugging in collaboration with cross-functional teams to drive product development improvements</li><li>Be involved in design and analysis for a range of systems, including mechanical components, electromechanical systems, or specific components such as bearings, enclosures, or structural elements, depending on your interests and expertise</li><li>Help with data collection, analysis, and conducting tests to validate system performance under different conditions</li><li>Support the engineering team in identifying and resolving technical challenges, helping ensure products meet required standards</li></ul><h3>Qualifications</h3><ul><li>College student in the last 2 years of a <b>BS</b> or  attending a <b>MS</b> program in Mechanical Engineering, Mechatronics, Electrical Engineering, or a related field</li><li>Previous internship experience in product design or a manufacturing environment is a plus</li><li>Experience with mechanical design, fabrication, testing, and debugging is beneficial</li><li>Familiarity with tools like <b>SolidWorks</b> or other 3D CAD software and a basic understanding of mechanical drawings, dimensioning, and tolerance techniques</li><li>Knowledge of materials, fluid/thermal systems, and experience with FEA analysis is a plus</li><li>Strong collaboration and interpersonal skills, with the ability to work effectively with peers, managers, and external partners</li><li>Interest in working in a manufacturing environment and on full-size products is preferred</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Mechanical Engineering Intern

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is seeking a talented Mechanical Engineer to join the team responsible for the alignment of critical components for our innovative Linear Generator technology. This challenging role requires creativity and a broad range of skills to make a significant impact on our clean energy solution for a part that is critical to the success of the company.</span></div><br><br><h3>Responsibilities</h3><ul><li>Design and development that align and maintain alignment of major components, including design, 3D CAD modeling (Solidworks), engineering analysis (FEA tools like ANSYS), testing, root cause investigation and comprehensive documentation</li><li>Collaborate cross-functionally with Electrical Engineering, Controls, Manufacturing, and Suppliers to ensure seamless subsystem integration, performance, and efficient product introduction (DFM/DFA, work instructions, tooling/fixtures).</li><li>Plan and execute rigorous verification and validation testing to ensure designs meet functional, durability, safety, and reliability requirements.</li><li>Provide technical guidance to technicians, and contribute to the continuous improvement of engineering processes, tools, standards, and best practices</li><li>Stay current on mechanical engineering advancements relevant to power generation, identifying opportunities to reduce costs, improve performance, and enhance reliability as Mainspring scales its technology</li><li>Uphold and further Mainspring's mission to create clean, affordable, and reliable power generators that accelerate the world's transition to a sustainable energy future</li></ul><h3>Education and Experience</h3><ul><li>Bachelor's or Master's degree in Mechanical Engineering or similar field</li><li>3+ years as a professional mechanical design engineer</li><li>Delivered products through 1+ full design lifecycles from concept to manufacturing support, preferably in industrial equipment, power generation, or electromechanical machines</li><li>Self-starter with a proven ability to deliver functional designs in a rapid development environment and a track record of innovation and continuous improvement</li></ul><h3>Technical Skills</h3><ul><li>Proficiency in 3D CAD modeling (SolidWorks preferred), engineering drawing creation (GD&amp;T), and tolerance stack analysis. Experience with PDM or similar CAD version control systems.</li><li>Knowledge of mechanical design principles, materials, and manufacturing processes (sheet metal, welding, casting). Ability to identify and resolve design-for-manufacturability issues.</li><li>Hands-on experience with mechanical prototyping, assembly, and testing. Familiarity with FEA, CFD, and thermal analysis tools.</li><li>Expertise in bolted joints, thermal impacts on structures, and design for severe vibration environments is a plus.</li><li><br></li></ul><h3>Soft Skills</h3><ul><li>Excellent problem-solving, creative thinking, communication, and collaboration skills for effective cross-functional teamwork</li><li>Ability to work independently, manage multiple projects in a fast-paced environment</li><li>Passion for clean energy and commitment to creating a more sustainable world</li><div><br></div></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Mechanical Engineer - Alignment

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">The </span><b style="font-size:16px;">Vice President of Electrical Supply Chain</b><span style="font-size:16px;"> is responsible for leading, developing, and optimizing the electrical supply chain operations across the organization. This role oversees procurement, supplier relationships, logistics, and operational efficiency for electrical components, ensuring cost-effective sourcing, high-quality standards, and reliable supply chain performance. This role will work closely with engineering, manufacturing, strategic partners, contract manufacturers and other stakeholders to drive innovation, sustainability, and business growth. This position reports to the Senior Vice President - Operations &amp; Global Supply Chain</span></div><br><br><h3>Key Responsibilities</h3><ul><li><b>Strategic Leadership &amp; Planning</b></li><div><br></div><li>Develop and execute a comprehensive global electrical supply chain strategy aligned with the company’s business objectives</li><li>Establish key performance indicators (KPIs) and metrics to drive efficiency, cost savings, and risk mitigation</li><li>Foster a culture of continuous improvement through lean methodologies and supply chain best practices</li><li>Drive digital transformation initiatives in procurement, logistics, and supplier management</li><div><br></div><li><b>Sourcing &amp; Supplier Management</b></li><div><br></div><li>Oversee sourcing for electrical components, ensuring competitive pricing, scalability and supply quality/reliability</li><li>Develop strategic supplier partnerships, relationships and negotiate contracts to optimize cost, quality, delivery and lead times</li><li>Clear experience and knowledge partnering with some of the key/top companies within the electrical commodities’ space </li><div><br></div><li><b>Operational Efficiency &amp; Cost Management</b></li><div><br></div><li>Drive cost reduction strategies through supplier negotiations, sourcing, incoterms, and process improvements</li><li>Work continually with internal stakeholders to improve our supplier and part transition into production</li><li>Develop and manage the electrical and related supply chain budget, ensuring alignment with financial targets</li><div><br></div><li><b>Compliance &amp; Risk Management</b></li><div><br></div><li>Ensure compliance with international trade regulations, industry standards, and company policies</li><li>Manage risks related to geopolitical factors, tariffs, and supply chain disruptions</li><li>Implement sustainability initiatives to support corporate environmental goals. Oversee ethical sourcing and sustainability initiatives within the supply chain</li><div><br></div></ul><h3>Qualifications &amp; Experience</h3><ul><li>Bachelor’s degree in Supply Chain Management, Electrical Engineering, Business Administration, or a related field; MBA or advanced degree preferred</li><li>15+ years of experience in supply chain, procurement, or operations, with at least 5 years in a senior leadership role</li><li>Extensive experience in electrical and/or industrial supply chain management, and sourcing</li><li>Strong knowledge of global supply chain trends, risk management, and digital supply chain solutions</li><li>Proven track record in supplier negotiations, agreements, cost optimization, scaleability, and operational excellence</li><li>Excellent leadership, communication, and stakeholder management skills. Proven coaching skills and developer of people</li><li>Proficiency and flexibility within systems, ERP and MRP/supply chain management related (SAP, Oracle, etc.)</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Vice President of Electrical Supply Chain

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b><span style="font-size:18px;">Job Overview</span></b></div><div><br></div><div><span style="font-size:16px;">Reporting to the VP, Finance, this position will drive the financial planning and analysis process of Mainspring, primarily responsible for developing budgets, forecasting future performance, analyzing financial data, and providing strategic insights to senior management to support decision-making by identifying key trends, risks, and opportunities for growth. </span></div><br><br><h3>Responsibilities</h3><ul><li>Lead the annual budgeting process, including collaborating with different departments to gather input and develop comprehensive budget plans. </li><li>Develop and drive the planning schedule, collaborating with senior management, finance team members, and key stakeholders.</li><li>Create and maintain detailed financial models to forecast revenue, expenses, and profitability across various business units. </li><li>Develop long-range financial plans aligned with the company's strategic objectives. </li><li>Analyze financial performance data to identify key trends, variances, and drivers impacting profitability. </li><li>Prepare monthly, quarterly, and annual financial reports for senior management, highlighting key performance indicators (KPIs).</li><li>Conduct variance analysis to explain deviations from budget and forecast, identifying potential issues and areas for improvement. </li><li>Provide financial insights and recommendations to leadership on potential business initiatives, investments, and mergers and acquisitions. </li><li>Establish business relationships across the organization and serve as a strategic thought partner with cross-functional teams.</li><li>Develop and present data-driven presentations to communicate complex financial information effectively. </li><li>Identify opportunities to streamline financial planning and reporting processes, including automation and system enhancements. </li><li>Take ownership of the company’s existing financial planning system environment and provide recommendations for system improvements. Drive implementation of approved recommendations through to completion.</li><li>Continuously evaluate and refine financial models and reporting tools to improve accuracy and timeliness.</li></ul><h3>Qualifications</h3><ul><li>Bachelor’s degree in Finance, Economics or related area; MBA, CFA, or CPA a plus</li><li>7+ years of relevant experience in a corporate finance or FP&amp;A role, preferably in a company manufacturing a complex product or in the energy industry</li><li>Proven experience in budgeting, forecasting, and financial planning </li><li>Strong analytical skills with proficiency in financial modeling and data analysis</li><li>Excellent communication and presentation skills to convey complex financial information to non-financial stakeholders </li><li>Deep understanding of financial accounting principles and business operations</li><li>Advanced proficiency in Microsoft Excel and financial software applications </li><li>Highly motivated team player driven to achieve exceptional results</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Corporate FP&A Manager

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">The technology that powers Mainspring’s Linear Generator is unlike any other generator technology on the market. The Linear Generator relies on innovative electrical power and control hardware systems to achieve its best-in-class efficiency while meeting the world’s strictest emissions requirements. These hardware systems are designed by a talented team of engineers that own hardware design from initial concept through test and manufacturing. We're looking for an enthusiastic intern to join the electrical engineering design team and help us shape the future of energy! Internship work assignments will emphasize troubleshooting and problem resolution, as part of a broader cross-functional effort to continuously improve our Linear Generator. </span></div><br><br><h3>Responsibilities</h3><ul><li>Get hands-on experience troubleshooting complex hardware issues on R&amp;D generators, on the production floor, and at field units</li><li>Analyze generator operating data to characterize problems</li><li>Lead failure investigations, including identifying near term containment activities, root causing problems, and implementing &amp; validating corrective actions</li><li>Formulate roll-out plans to globalize corrective actions across our fleet of customer generators</li><li>Contribute to various design activities that may involve low voltage electronics, low and high voltage power distribution, power converters, high voltage batteries and more!</li><li>Learn and grow alongside a team of world class engineers!</li></ul><h3>Qualifications</h3><ul><li>An eagerness to work on a wide variety of assignments</li><li>Experience working in a team environment with ability to communicate across a range of disciplines and personalities</li><li>Electrical Engineering or similar major, with basic fundamentals of circuit theory</li><li>Hands-on knowledge of oscilloscopes, multimeters and other test instruments to measure electrical parameters such as voltage, current, frequency</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Electrical Engineer Intern

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">Our Linear Generator is a sophisticated, automated, and integrated system spanning a wide range of engineering disciplines including thermodynamics, mechanical, electrical, software, and controls. We are looking for a driven, highly motivated Product Qualification Test Engineer to join our test engineering team.</span></div><div><br></div><br><br><h3>Responsibilities</h3><ul><li>Perform hands-on work and operate our Linear Generator units</li><li>Qualify units to be shipped to customers sites in our pilot manufacturing facility, and support contract manufacturing</li><li>Outline and develop processes to scale up product qualification tests in collaboration with New Product Introduction (NPI) team</li><li>Develop data analysis tools to evaluate pass/fail criteria and to define next steps in qualification</li><li>Root cause, document and drive the resolution of design, quality or process issues discovered during manufacturing or reliability testing working with cross functional engineering teams</li></ul><h3>Qualifications</h3><ul><li>Master’s degree in mechanical engineering, electrical engineering, mechatronics, or equivalent with 3+ years of applicable experience</li><li>Experience of conducting experimental projects plus if in the context of product qualification, manufacturing, or reliability testing</li><li>Proficiency in programming in at least one language (e.g. Python, C++, MATLAB) plus if experience with data analysis</li><li>Detail-oriented and comfortable working in a fast-paced environment</li><li>Enjoy working in interdisciplinary teams</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Test Engineer, Product Qualification

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">The Workplace and Facilities Operations Manager will oversee the efficient and effective management of workplace services, facilities operations, and office environments. This role focuses on creating a productive, safe, and engaging workplace experience while ensuring compliance with health, safety, and environmental standards. The ideal candidate will bring hands-on expertise in troubleshooting and repairing building systems, equipment, and infrastructure, alongside partnering with IT and the Information Security Manager to implement robust physical security measures. This position combines strategic planning with technical skills and hands-on problem-solving to support company growth and employee satisfaction.</span></div><br><br><h3>Responsibilities</h3><ul><li>Oversee day-to-day workplace operations, ensuring a seamless and efficient office, industrial, manufacturing, and research environment.</li><li>Manage office layouts, space planning, and seating arrangements to optimize productivity and accommodate company growth.</li><li>Collaborate with HR and leadership to enhance employee engagement through workplace initiatives and events.</li><li>Develop and implement workplace policies and procedures to support company culture and values.</li><li>Perform hands-on troubleshooting and repairs of building systems, including HVAC, plumbing, electrical, mechanical, and office equipment, to ensure all systems function optimally.</li><li>Regularly inspect facilities to identify maintenance needs and address them proactively.</li><li>Act as the first responder for maintenance issues, resolving problems directly or coordinating with external vendors for complex repairs.</li><li>Develop and execute a preventive maintenance program to extend the life of equipment and infrastructure.</li><li>Maintain an inventory of tools, spare parts, and supplies to facilitate timely repairs and maintenance.</li><li>Lead facility upgrades and improvement projects with both technical expertise and project management skills.</li><li>Serve as liaison between the business and its landlords.</li><li>Participate in government agency safety and regulatory inspections. Assist in ensuring compliance with company policies, Federal, State and local regulations.</li><li>Collaborate with IT and the Information Security Manager to develop and maintain an integrated security strategy for physical infrastructure.</li><li>Own and emphasize implementation and maintenance of access control systems, including badge issuance and visitor management processes.</li><li>Support IT and Cybersecurity in managing surveillance systems, alarm systems, and other security technologies.</li><li>Conduct joint risk assessments with IT and Security to identify vulnerabilities and implement mitigation measures.</li><li>Ensure alignment between physical security protocols and cybersecurity policies to protect company assets, personnel, and data.</li><li>Participate in and support Business Continuity and Disaster Recovery Planning.</li><li>Develop and manage the facilities and workplace operations budget, ensuring cost efficiency.</li><li>Monitor and report on expenditures, identifying opportunities for cost savings.</li><li>Oversee procurement for office supplies, equipment, and services.</li><li>Negotiate contracts and maintain relationships with external vendors, including cleaning services, security, equipment suppliers and facility service providers.</li><li>Oversee, manage, and personally evaluate vendors that meet service-level agreements and performance expectations.</li><li>Lead efforts to improve energy efficiency, reduce waste, and promote sustainable workplace practices.</li><li>Implement green initiatives to align with company values and environmental goals.</li></ul><h3>Qualifications</h3><ul><li>Bachelor’s degree in Facilities Management, Engineering Technology, or a related field; or equivalent technical experience.</li><li>5+ years in facilities management, workplace operations, or a related role.</li><li>2+ years of hands-on experience as an engineering technician or similar role, with the ability to troubleshoot and repair mechanical, electrical, and office systems.</li><li>2+ years of experience collaborating on physical security initiatives, especially in partnership with IT and security teams.</li><li>Experience managing budgets, vendors, and cross-functional teams.</li><li>Strong mechanical, electrical, and troubleshooting skills.</li><li>Knowledge of physical security systems and protocols, including access control and surveillance.</li><li>Excellent communication and interpersonal abilities.</li><li>Familiarity with workplace technologies (e.g., space management software, security systems).</li><li>Knowledge of safety regulations and compliance standards.</li></ul><h3>Preferred Qualifications</h3><ul><li>Certification in Facilities Management (e.g., FMP, CFM, or IFMA).</li><li>Certified Engineering Technician (e.g., CET or equivalent).</li><li>Certified Security Professional (e.g., CPP, PSP).</li><li>Experience collaborating with IT and Cybersecurity teams on integrated security measures.</li><li>Experience in sustainability and environmental initiatives.</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Workplace and Facilities Operations Manager

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">We seek an experienced and dedicated Technical Training Specialist to develop, manage, and continuously improve our nationwide training program for field service technicians and subcontractors. This role will be based at our HQ but will require travel to field locations nationwide for on-location training, evaluations, and support. The Trainer will ensure our field service teams are well-prepared with the knowledge and technical expertise needed to perform effective maintenance, troubleshooting, and repairs of our generators. This role will involve collaborating with cross-functional teams to align training programs with evolving product offerings and industry standards.</span></div><br><br><h3>Responsibilities</h3><ul><li>Develop, update, and maintain training materials and curriculum for the Field Service Technician program, ensuring all content is aligned with company objectives, new product launches, and evolving industry standards. This includes developing both in-office training modules and on-site technical guides.</li><li>Lead the onboarding of new field service technicians, providing initial training, certification, and ongoing support to ensure competence in technical procedures, safety standards, and troubleshooting.</li><li>Travel nationwide to provide hands-on training to field service technicians, ensuring real-time guidance and troubleshooting support. Conduct assessments of technician proficiency through practical demonstrations and field evaluations to identify areas for improvement.</li><li>Evaluate and improve training programs based on feedback, field performance, and technical advances. Lead the implementation of continuous learning efforts to enhance skills across the team, including integrating new products and technologies.</li><li>Work closely with cross-functional teams, including Engineering, Product Management, Customer Success, and Support, to ensure training programs meet business and customer requirements. Regularly communicate the training program's impact and success to key stakeholders.</li><li>Monitor and evaluate the effectiveness of the training program, using key performance indicators (KPIs) and feedback to optimize training delivery. Provide monthly reports on the program's health, including technician progress and content updates.</li><li>Ensure all training and procedures adhere to company safety standards and regulatory requirements. Foster a safety culture among the field service technicians, emphasizing best practices in safety and quality assurance.</li><li>Manage multiple training initiatives simultaneously, ensuring the timely delivery of high-quality content. Coordinate the scheduling of training sessions, resources, and assessments, ensuring a smooth and effective process.</li></ul><h3>Qualifications</h3><ul><li>Bachelor's degree in a technical field or related discipline, related talent industry experience.</li><li>Proven experience in a similar role, such as technical training, service management, or a field service leadership position.</li><li>3+ years of experience in training and curriculum development, ideally within a technical field or IoT devices.</li><li>Knowledge of generators or related electrical and mechanical systems, with hands-on experience in troubleshooting and maintenance.</li><li>Familiarity with learning management systems (LMS) and content development tools (e.g., Google Suite).</li><li>Strong technical communication skills, with the ability to convey complex concepts concisely and effectively.</li><li>Excellent project management skills, with the ability to manage multiple initiatives, deadlines, and stakeholders.</li><li>Demonstrated success in designing and delivering successful training programs, including virtual and in-person formats.</li><li>Ability to work collaboratively with cross-functional teams (Engineering, Customer Success, Support, etc.).</li><li>Exceptional organizational skills, attention to detail, and the ability to track and report on training progress.</li><li>Ability to travel up to 25% of the time for on-site training and field evaluations.</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Technical Training Specialist - Field Service

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">We are seeking a motivated and detail-oriented Supply Chain Cost Engineering Intern to join our team. This internship provides an excellent opportunity to gain hands-on experience in supply chain cost analysis and optimization strategies. The Supply Chain Cost Engineering Intern will work closely with our experienced team members to support various projects aimed at improving cost efficiency and reporting of our product.</span></div><br><br><h3>Responsibilities</h3><ul><li>Assist in conducting cost analysis across different aspects of the supply chain, including procurement, manufacturing, transportation, and distribution</li><li>Collaborate with cross-functional teams such as procurement, engineering, logistics, production, and finance to collect and analyze data</li><li>Help develop and maintain current cost models to evaluate the impact of different scenarios on overall BOM costs</li><li>Assist in the development of a database (Intuit Quickbase) application to facilitate cost reduction efforts and cost modeling</li><li>Support in the development of a new QuickBase application for cost modeling</li><li>Assist in monitoring and tracking initiatives aimed at reducing costs, offering updates and reports to management as necessary</li><li>Participate in the deployment of Enovia PLM, advocating for Supply Chain requirements during PLM implementation</li><li>Assist in ad-hoc projects and tasks as assigned by the supervisor</li></ul><h3>Qualifications</h3><ul><li>Currently enrolled in a BS or MS program in Engineering, Supply chain management, Finance, or related field</li><li>Strong analytical skills with proficiency in data analysis tools and Google Sheet</li><li>Excellent communication and interpersonal skills, with the ability to work effectively in a team environment</li><li>Detail-oriented with strong organizational skills and the ability to manage multiple tasks simultaneously</li><li>Eagerness to learn and willingness to take on new challenges</li></ul><h3>Preferred Qualifications</h3><ul><li>Knowledge of ERP systems (e.g., SAP, Oracle) and supply chain software</li><li>Experience with Enovia</li><li>Understanding of supply chain principles, logistics, procurement, and inventory management.</li><li>Previous internship experience in PLM deployment, data analysis or supply chain</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Supply Chain Cost Engineering, Intern

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">The Supply Chain Analyst is responsible for analyzing and optimizing the end-to-end supply chain processes. This role involves collecting and interpreting data, forecasting demand, identifying cost-saving opportunities, and ensuring timely delivery of products and materials. The Supply Chain Analyst will collaborate with internal teams, suppliers, and logistics partners to enhance efficiency, reduce costs, and support overall business objectives.</span></div><br><br><h3>Responsibilities</h3><ul><li>Analyze supply chain data to identify trends, inefficiencies, and opportunities for improvement.</li><li>Develop and maintain dashboards, reports, and performance metrics to support data-driven decision-making.</li><li>Present insights and recommendations to supply chain leadership and cross-functional teams.</li><li>Monitor contract manufacturer’s buying practices and adherence to standard work.</li><li>Oversee Purchase Requisition approvals to ensure compliance with company policies.</li><li>Drive utilization of system-driven automation to enhance operational efficiency and reduce manual intervention.</li><li>Ensure demand planning aligns with inventory levels, production schedules, and capacity planning.</li><li>Analyze inventory data to optimize stock levels and minimize carrying costs.</li><li>Collaborate with procurement and warehouse teams to prevent stockouts or overstocking.</li><li>Support cycle counting, audits, and inventory reconciliation processes.</li><li>Monitor and manage Excess &amp; Obsolete (E&amp;O) inventory to minimize financial impact and support disposition strategies.</li></ul><h3>Qualifications</h3><ul><li>Bachelor’s degree in Supply Chain Management, Business Administration, Logistics, or a related field.</li><li>Minimum 5 years of experience in supply chain analysis, logistics, procurement, or a related role.</li><li>Proficiency in data analytics tools and software, such as Excel, Power BI, Tableau, or similar platforms.</li><li>Strong understanding of ERP systems (e.g., SAP, Oracle) and inventory management software.</li><li>Excellent analytical, problem-solving, and decision-making skills.</li><li>Effective communication skills to present complex data to stakeholders and leaders</li><li>Knowledge of Lean, Six Sigma, or other process improvement methodologies is a plus.</li><li>Experience in SQL, Python, or other data analysis and visualization tools.</li><li><b>May require travel to supplier or contract manufacturers locations as needed.</b></li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Supply Chain Analyst

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">A key enabler of Mainspring’s mission is the ability of its team to deliver solutions based on our linear generator technology that solve customer problems in the cross-section of resiliency and clean power generation. This includes site due diligence, design engineering, permitting, construction operations, and commissioning.</span></div><br><br><h3>Responsibilities</h3><ul><li>Drive a culture of safety, quality and best practices on all aspects of the Project.</li><li>Oversee and manage the development and construction of Company projects. Scope, schedule, cost management in accordance with project and stakeholder requirements.</li><li>Manage a project consisting of: Project Engineers, project administrators, permitting consultants, Product engineers, construction management, QA/QC department, etc.</li><li>Effectively communicate with a variety of stakeholders to wholistically manage Utility scale projects from development engineering through commercial operation.</li><li>Manage site construction manager and QA/QC processes. Oversee health and safety program on site and ensure compliance on all relevant parties.</li><li>Maintain site records and databases to document inspection results, maintenance schedules, and all operational changes or updates.</li><li>Collaborate with external contractors, consultants, site owners, and internal teams to resolve site-specific issues. Coordinate with other teams to ensure the necessary documentation is in place to naturally transitions projects to operational assets.</li><li>Prioritize and escalate issues as necessary to maintain critical path.</li><li>Coordinate product specifications, including submittal reviews and approvals.</li><li>Negotiate prime, CM, and subcontract agreements. Manage change orders.</li><li>Direct the project turnover documentation, warranty administration, project closeout, and record keeping/retention processes and procedures.</li><li>Support communication with City, County, Building, Fire and other AHJ’s on project related topics.</li><li>Environmental impact risks and mitigations.</li><li>Review construction field reports.</li></ul><h3>Qualifications</h3><ul><li>10+ years of experience in project management or site operations, specifically within power generation, distributed energy resources, or utility-scale facilities greater than 10 MW.</li><li>Demonstrated expertise in Power Generators operation and maintenance or similar systems, with experience across all phases of development.</li><li>Detailed understanding of contracting, procurement planning, construction and logistic, scheduling, estimate, and budgeting.</li><li>Delivery and execution of project plans, writing RFPs, leading procurement activities and negotiations.</li><li>Ability to utilize industry tools to track cost expenditures and budget allocations.</li><li>Ability to travel to job sites 25% of the time.</li><li>Strong working knowledge of Microsoft Office software (Word, Excel, Project, PowerPoint). Google workplace applications.</li><li>Project Management software (Procore)</li><li>Strong written/verbal communication skills.</li><li>Strong analytical and problem-solving skills, and attention to detail.</li><li>Ability to handle large volumes of work and multi-task in a fast-paced environment.</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Staff Project Manager - Utility Scale

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job overview</b></div><div><br></div><div><span style="font-size:16px;">One core innovation in the Linear Generator is the use of a piston and ring system without liquid lubricant, which dramatically reduces emissions and O&amp;M costs. This person will work on the challenging design of these solid lubricant systems, involving complex 3D shapes with sliding seals, high pressure and temperature, materials optimization, with complex fluid dynamics, heat transfer and structural mechanics. This person needs to be a fast learner, who can take on a leadership role and lead development projects, design parts and do hands-on work in the lab to analyze performance and failure modes.</span></div><br><br><h3>Responsibilities</h3><ul><li>Lead ring development projects, including developing project requirements and scope, developing novel designs, reviewing in detail the designs and analyses of colleagues, and developing production introduction plans</li><li>Design complex moving parts in the piston and ring system of the Linear Generator, from originating creative ideas, executing the design and build, testing and then evaluating performance</li><li>Assess failure modes that involve complex thermal/structural/materials/fluids interactions</li><li>Develop system models to drive component design development in response to field observations</li><li>Develop accelerated life tests in the lab on benchtop and in-generator experiments</li></ul><h3>Qualifications</h3><ul><li>Masters in Mechanical Engineering or equivalent with at least ten years experience or PhD in Mechanical Engineering or equivalent with at least seven years experience</li><li>Self-starter who thrives in a fast-paced dynamic environment and can lead projects and optimize solutions across different teams.</li><li>Design experience with high performance parts that have been released into the market</li><li>Expert in SolidWorks or comparable CAD package, including structural FEA</li><li>Solid physical understanding of structural mechanics and heat transfer; strength in the following fields is a plus: tribology, fluids, materials</li><li>Ability to generate 2D drawings for manufacturing, experience utilizing GD&amp;T is preferred</li><li>Ability to develop system models to understand component performance relative to operating parameters</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Staff Mechanical Engineer

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring is seeking Staff Mechanical Design Engineer with a focus on developing a high-voltage linear electromagnetic machine (LEM) for improved performance, cost, and reliability. You will design and advance new components and subsystems with challenging technical requirements from initial concept through successful manufacturing launch. You will manage existing concepts through development, deployment, and manufacturing. At staff level, you will lead projects with potential for direct reports. Mainspring is a great place for engineers who have a variety of areas of deep expertise and like to solve challenging cross-functional problems requiring a mix of computational analysis, hands-on engineering and team effort.</span></div><div><br></div><br><br><h3>Responsibilities</h3><ul><li>Lead and participate in brainstorming activities to develop novel ways to improve all aspects of the LEM and the Linear Generator broadly.</li><li>Develop and optimize key mechanical and electromechanical subsystems within the LEM to drive down cost, improve performance, and deliver high reliability. These systems may include: magnetic encoders and other position sensors; high-voltage wiring and coil design; precision-machined steel and cast-iron components; magnet array assembly methods; composite material manufacturing and analysis; air bearing design, development, and testing.</li><li>Work with reliability and test teams to validate systems and components with fast cycles of learning for deployment into the next generation of Linear Generators.</li><li>Collaborate cross-functionally with manufacturing engineering, NPI, and external suppliers to rapidly deploy new designs into production.</li><li>Provide technical guidance to junior engineers and technicians, and contribute to the continuous improvement of engineering processes, tools, standards, and best practices</li></ul><h3>Qualifications</h3><ul><li>Degree in Mechanical Engineering or a similar engineering field from an accredited institution. Experience and degree will determine level, but minimum requirements are: Staff Level: BS + 10 years or MS + 9 years</li><li>Deep understanding of metal castings, machining, welding/fabrication, bolted connections, datum selection, large tolerance stackup analysis, and finishing processes with the ability to identify and resolve design for manufacturability issues.</li><li>Demonstrated experience with volume manufacturing of electric motors or generators, including: Design for Quality, inspection and testing methods, insulation system design and certification, formed and wound coil design, magnetic material specification and handling, lamination design and manufacturing.</li><li>Extensive experience working directly with suppliers, vendors and contract manufacturers to address quality or manufacturing issues.</li><li>Ability to work independently, manage multiple projects in a fast-paced environment, and demonstrate leadership and mentoring abilities</li><li>Fluent in SolidWorks or comparable CAD package. Experience with using PDM or a similar CAD version control system is preferred.</li><li>Interest in developing creative and cost effective solutions to enable the deployment of zero carbon energy technology at large scale.</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Staff Mechanical Design Engineer - Linear Electromagnetic Machine

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">The Staff Human Resources Business Partner (HRBP) serves as a strategic partner to business leaders, providing guidance on human resources initiatives that drive business objectives. This role is responsible for aligning HR practices with business strategy, fostering a positive workplace culture, and supporting employee development. The HRBP will collaborate closely with leadership to implement HR solutions that enhance performance, employee engagement, and compliance.</span></div><br><br><h3>Responsibilities</h3><ul><li>Act as a trusted advisor to managers and employees, providing expert HR guidance on talent management, employee relations, workforce planning, and organizational development</li><li>Partner with leadership to understand business goals and align HR strategies to support operational objectives</li><li>Lead employee engagement initiatives, fostering a culture of continuous feedback, professional development, and high performance</li><li>Support performance management processes, including coaching managers on employee development, goal setting, and performance evaluations</li><li>Oversee and ensure compliance with labor laws, company policies, and HR best practices</li><li>Provide guidance on compensation, benefits, and rewards programs to ensure market competitiveness and internal equity</li><li>Collaborate with talent acquisition teams to drive recruitment strategies, ensuring alignment with workforce planning and diversity goals</li><li>Address and resolve complex employee relations issues, conducting investigations as necessary and recommending appropriate actions</li><li>Drive organizational change initiatives by supporting business transformation efforts and reinforcing change management best practices</li><li>Develop and deliver HR training programs to enhance managerial and employee capabilities</li><li>Utilize HR data analytics to provide insights and recommendations on workforce trends, retention, and engagement</li></ul><h3>Qualifications &amp; Experience</h3><ul><li>Bachelor’s degree in Human Resources, Business Administration, or a related field (Master’s degree preferred)</li><li>15+ years of progressive HR experience, with at least 5 years focus on HR business partnering</li><li>Strong knowledge of employment laws and HR compliance requirements</li><li>Proven experience in employee relations, talent management, and organizational development.</li><li>Ability to work effectively in a fast-paced, dynamic environment</li><li>Strong interpersonal and communication skills, with the ability to build relationships across all levels of the organization</li><li>Proficiency in HRIS systems and data-driven decision-making</li><li>Certification such as PHR, SPHR, SHRM-CP, or SHRM-SCP is a plus</li></ul><h3>Key Competencies</h3><ul><li>Strategic Thinking</li><li>Relationship Management</li><li>Problem-Solving and Decision-Making</li><li>Change Management</li><li>Communication and Influence</li><li>Coaching and Leadership Development</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

Staff Human Resources Business Partner

<div><b style="font-size:16px;">Company Overview</b></div><div><br></div><div><span style="font-size:16px;">Mainspring Energy is revolutionizing power generation with the world’s most flexible and adaptable onsite power generator, the Mainspring Linear Generator. Commercial, industrial, and utility leaders are choosing Mainspring over traditional options like engines, turbines, and fuel cells to quickly and reliably deliver local power for EV charging, commercial facilities, data centers, and grid-scale operations. The Mainspring Linear Generator is fuel flexible, ramps up and down to meet demand, and utilizes a flameless technology with near-zero NOx emissions.</span></div><div><br></div><div><span style="font-size:16px;">Backed by top-tier investors such as Khosla Ventures, Bill Gates, American Electric Power, and Lightrock, Mainspring designs, manufactures and delivers its products to customers across the U.S. today, and we’re quickly scaling for international expansion. </span></div><div><br></div><div><span style="font-size:16px;">Inspired by our vision of the affordable, reliable, net-zero carbon grid, Mainspring is rapidly expanding within the $816B global electricity equipment market, and we’re hiring the best talent to meet growing customer demand around the globe. We welcome a broad range of backgrounds, experiences, and talents to bring fresh perspectives and ongoing innovation to our customers.</span></div><div><br></div><div><span style="font-size:16px;">We are looking to build relationships with people who share our values:</span></div><div><br></div><div><b style="font-size:16px;">Pragmatic Optimism.</b><span style="font-size:16px;"> Building a new category of world-class power generation requires the optimism of ambition and creativity, balanced with practicality to solve problems efficiently. The challenges that arise are opportunities for growth.</span></div><div><br></div><div><b style="font-size:16px;">Excellence without Ego.</b><span style="font-size:16px;"> We bring expertise and commitment to creating the best customer experience, from sales to deployment and service, just as we apply deep technical rigor to building and delivering world-class products. We strive for excellence and behave as leaders with the humility to acknowledge our challenges, both collectively and as individual contributors.</span></div><div><br></div><div><b style="font-size:16px;">Proactive Collaboration.</b><span style="font-size:16px;"> The integration and cross-disciplinary nature of Mainspring’s business requires intentionally seeking out others who bring different skills, perspectives, and priorities. Our culture of inclusion and respect extends beyond our team to interactions with our partners and customers.</span></div><div><br></div><div><span style="font-size:16px;">More information can be found at </span><a style="font-size:16px;" href="http://www.mainspringenergy.com/">www.mainspringenergy.com</a></div><div><br></div><div><b style="font-size:18px;">Job Overview</b></div><div><br></div><div><span style="font-size:16px;">Are you passionate about creating and improving a company’s business processes through the use of Enterprise Software Systems?</span></div><div><span style="font-size:16px;">Mainspring Energy is seeking a smart and energetic individual passionate about developing and implementing new business process solutions supporting our start-up company’s growth and transitioning our breakthrough technology toward volume manufacturing.</span></div><div><span style="font-size:16px;">We are looking for a hands-on system developer, with previous experience working on Customer Relationship Management (CRM), Enterprise Resource Planning (ERP), Material Resource Planning (MRP), Fleet Service Management (FSM) Systems.</span></div><div><span style="font-size:16px;">You will be directly involved with all facets of our business, departments and levels, working cross-functionally across our company.</span></div><div><span style="font-size:16px;">You will deliver user-friendly solutions that are tailored to team requirements, automating manual and tedious tasks as well as setting up SOX-compliant financial transaction systems or creating brand new data management systems.</span></div><br><br><h3>Responsibilities</h3><ul><li>Create business process flows for existing and new processes.</li><li>Develop business requirement documents by gathering feedback from all levels of the organization and distill it into actionable items for your software development work.</li><li>Develop new end-to-end business processes such as: prospective and existing customers management, product and process change management processes, efficiently control part suppliers and manufacturing partners production and quality, internal and external production operations business flows.</li><li>Develop on our existing QuickBase database platform and expand its connection to other software applications.</li><li>Responsible for testing, implementation and facilitating user training.</li><li>Project/Program manage new feature/system launches</li></ul><h3>Qualifications</h3><ul><li>10 + years of experience in enterprise systems configuration and feature development.</li><li>A proven track record of building strong working relationships with business stakeholders.</li><li>Proficient with QuickBase database programming. QuickBase certifications are a plus.</li><li>Experience or ability to quickly learn to configure systems like Salesforce, NetSuite, QuickBase using native workflow building tools.</li><li>Strong understanding of relational databases. Python or Javascript experience is a plus.</li><li>Experience working to grow and scale business systems for a hardware manufacturing company is a plus.</li></ul><br><div><span style="font-size:16px;">Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don’t meet all posted requirements for a particular role, we’d still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.</span></div><div><br></div><div><span style="font-size:16px;">In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.</span></div><div><br></div><div><span style="font-size:16px;">This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.</span></div>

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