About the Role Rhoic is building next-generation electrospinning systems and water filtration technologies. We’re looking for a hands-on prototype engineer who thrives in fluid systems and isn’t afraid to roll up their sleeves in a startup lab environment. You’ll be working closely with the founding team to design, refine, and build critical components that bring our electrospinning and water testing systems to life. This is a dynamic environment; priorities and challenges will evolve as we learn, and we’re looking for someone who’s excited to grow with the role.Responsibilities<ul><li>Design and refine polymer solution handling systems (tubing, fittings, reservoirs, pumps/pressure feed, return flow paths).</li><li>Ensure material compatibility with aggressive solvents (formic acid, DMSO, DMF, acetone, etc.).</li><li>Integrate fluid delivery into moving mechanical bases with reliable couplings.</li><li>Contribute to sealing, environmental control, and venting of the electrospinning chamber (temperature, RH, solvent exhaust).</li><li>Build and iterate prototypes using off-the-shelf components, machining, or 3D printing.</li><li>Finalize and improve our water filter tester for reproducible performance data.</li><li>Collaborate with the team as a co-designer: identify potential failure modes, propose creative solutions, and adapt designs as needs evolve.</li></ul>Qualifications<ul><li>Strong background in fluid handling, chemical compatibility, or mechanical systems.</li><li>Experience working with solvents, tubing/fittings, or lab fluid systems (academic, industrial, or maker-style).</li><li>Hands-on prototyping skills: mechanical assembly, CAD basics, machining/3D printing</li><li>Flexible problem-solver, able to adapt quickly in a dynamic startup setting.</li></ul>What We Value<ul><li>Scrappiness and curiosity: you can improvise with what’s on hand but know when rigor is needed.</li><li>Collaborative spirit: eager to work alongside founders and contribute ideas, not just execute tasks.</li><li>Resilience in the face of unexpected challenges; see roadblocks as puzzles to solve.</li><li>A sense of ownership: pride in building systems that work reliably and safely.</li></ul>Compensation This is a contractor role for 20-40 hours per week. Hourly rate proportional to relevant experience. Typical range: $65–$90/hour. ApplyTo apply, submit an application here: <a target="_blank" rel="noopener noreferrer nofollow" href="https://thinkable-dollar-7e1.notion.site/276677802f678011a465d8d633e2ac2a">https://thinkable-dollar-7e1.notion.site/276677802f678011a465d8d633e2ac2a</a>

Rhoic is unlocking the commercial potential of nanomanufacturing to drive resource and energy efficiency across industries. Our proprietary AC electrospinning platform enables high-speed, low-cost production of tunable nanofibers, including complex 3D architectures that outperform traditional materials. By integrating real-time QA/QC and software-driven material iteration, we dramatically shorten R&amp;D timelines and ensure repeatable, high-performance results. Unlike legacy systems, our modular, scalable platform delivers competitive costs even at low volumes, making nanomanufacturing accessible for climate-critical applications.&nbsp;Our platform can create high performance solutions for diverse applications from filtration to lower data center energy usage to recovering lithium from brines for electric vehicle batteries.

Mechanical Systems Engineer (Fluids & Environmental Control)  (Contract, 20–40 hrs/week)

About the Role Rhoic is building next-generation electrospinning systems and water filtration technologies. We’re looking for a hands-on prototype engineer who thrives in fluid systems and isn’t afraid to roll up their sleeves in a startup lab environment. You’ll be working closely with the founding team to design, refine, and build critical components that bring our electrospinning and water testing systems to life. This is a dynamic environment; priorities and challenges will evolve as we learn, and we’re looking for someone who’s excited to grow with the role.Responsibilities<ul><li>Design and refine polymer solution handling systems (tubing, fittings, reservoirs, pumps/pressure feed, return flow paths).</li><li>Ensure material compatibility with aggressive solvents (formic acid, DMSO, DMF, acetone, etc.).</li><li>Integrate fluid delivery into moving mechanical bases with reliable couplings.</li><li>Contribute to sealing, environmental control, and venting of the electrospinning chamber (temperature, RH, solvent exhaust).</li><li>Build and iterate prototypes using off-the-shelf components, machining, or 3D printing.</li><li>Finalize and improve our water filter tester for reproducible performance data.</li><li>Collaborate with the team as a co-designer: identify potential failure modes, propose creative solutions, and adapt designs as needs evolve.</li></ul>Qualifications<ul><li>Strong background in fluid handling, chemical compatibility, or mechanical systems.</li><li>Experience working with solvents, tubing/fittings, or lab fluid systems (academic, industrial, or maker-style).</li><li>Hands-on prototyping skills: mechanical assembly, CAD basics, machining/3D printing</li><li>Flexible problem-solver, able to adapt quickly in a dynamic startup setting.</li></ul>What We Value<ul><li>Scrappiness and curiosity: you can improvise with what’s on hand but know when rigor is needed.</li><li>Collaborative spirit: eager to work alongside founders and contribute ideas, not just execute tasks.</li><li>Resilience in the face of unexpected challenges; see roadblocks as puzzles to solve.</li><li>A sense of ownership: pride in building systems that work reliably and safely.</li></ul>Compensation This is a contractor role for 20-40 hours per week. Hourly rate proportional to relevant experience. Typical range: $65–$90/hour. ApplyTo apply, submit an application here: <a rel="noopener noreferrer nofollow" href="https://thinkable-dollar-7e1.notion.site/276677802f678011a465d8d633e2ac2a">https://thinkable-dollar-7e1.notion.site/276677802f678011a465d8d633e2ac2a</a>

Mechanical Systems Engineer (Fluids & Environmental Control) (Contract, 20–40 hrs/week)

About the Job

About the Company

Rhoic, Inc.

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