Senior Mechanical Engineer - Thermal

  • San Francisco, CA, USA
  • May 29, 2021

Job Description

The Span engineering team is made of experienced, passionate people with expertise in electronics, mechanical design, energy systems, and embedded software. We are seeking a passionate mechanical engineer to join the hardware development team of SPAN. As a mechanical engineer, you will rely on your past experience in mechanical design, thermal analysis and hands on prototyping skills to assist Spanโ€™s hardware design, testing, and manufacturing efforts.


In this role, you will:

  • Model and design components using a variety of materials (plastic, metal, and glass).

  • Collaborate with internal and external teams.

  • Model heat transfer, structural and electromechanical aspects of our products and perform Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA)

  • Interpret analysis results, provide physical explanations and drive product solutions.

  • Participate in new product and technology development and proactively guide design directions to meet product performance requirements. You will also use FEA/CFD to augment failure analysis

  • Design and build prototype components and assemblies

  • Develop and perform thermal tests.

  • Create detailed 2D drawings using GD&T when applicable.

About You

Required Qualifications

You would be a great fit for this job if you:

  • Hold a BS or MS in Mechanical Engineering

  • Have 5+ years experience in static/dynamic structural, modal and thermal analysis using hand calculations as well as Ansys or similar FEA software. Experience in CFD, electromagnetic and non-linear analysis preferred

  • Take a hands-on approach whether it be building a prototype or performing testing.

  • Have strong problem solving skills and are able to manage workload of multiple projects

  • Effectively communicate technical concepts, ideas and knowledge to other team members, including mentoring junior members of the team

  • Enjoy working on projects with diverse teams under tight timelines.

  • Are proficient in 3D CAD, 2D detailed drawings.

  • Enjoy developing complex products and taking them from prototype to volume production.

  • Are passionate about renewable energy and energy storage.


Bonus Qualifications

We would love it if you also have:

  • A proven track record of working on complex electro-mechanical design simulations and analysis.

  • 3+ years experience working through the entire product lifecycle from concept to production

  • Knowledge of national and international safety and regulatory requirements such as UL, National Electric Code(NEC), IEC, and ISO.

  • Design experience with products that connect to the electrical grid, NEMA 3R enclosures, and/or complex thermal requirements.

Life at Span

Span is a startup based in the SOMA neighborhood of San Francisco. We are a small, diverse team of creative thinkers. We value open communication, teamwork, and a make-it-happen attitude - no job is too big or too small. We strive to make change by imagining what the future could be and building a product to complete that vision. We are looking to grow our team with talented people who are on the same mission to shape the future of energy.

Impacting the future as a small, agile team means putting in a lot of hard work and elbow grease so we work to make sure you are happy, healthy, and you look forward to coming to work. Working at Span, you can expect:

  • Competitive compensation

  • Medical, dental, vision, life and disability insurance

  • Sunny, airy office located close to BART and Caltrain

  • Regular team lunches, brown bag learning opportunities and events

  • Opportunity to influence our culture

Span embraces diversity and equal opportunity in a serious way. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills. The more inclusive we are, the better our work will be.


Organization Type


Organization Size



Ecosystems & Biodiversity, Energy

Drawdown solutions

Distributed Energy Storage

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