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Voya Energy

Voya Energy

Mechanical Cell Engineer

Hayward, USOn-sitePermanentFull-time$130,000 – $175,000 / year

Posted Sep 21, 2026


Voya Energy is commercializing a groundbreaking metal-based fuel to rapidly deploy reliable, clean, affordable electricity anywhere on Earth. Our breakthrough technology allows us to convert abundant, high-energy, recycled metals into a powerful, safe, durable fuel. We are also creating a foundational new category of energy generation devices, delivering fast access to power, free from the limitations of the grid. We are assembling a highly-experienced team of visionary founders, tenacious researchers, multi-disciplinary first principles engineers, battle-tested operators and world-class investors to deliver on Voya's ambitious mission. Join us in fueling our electric future.


Position Summary:

We’re looking for scientists and engineers who are passionate about research, innovation, and entrepreneurship to help develop and scale the cell architecture for Voya’s proprietary metal-air fuel cell. The successful candidate will take a leading role in setting the technical direction of the company.


Responsibilities:

  • Design, build, and validate a high-power metal-air fuel cell for Voya’s generator.
  • Work with material scientists to select and optimize cathode, anode, membrane/separator, and electrolyte materials as well as form-factor.
  • Develop and iterate novel current collector, separator/membrane, and electrode architectures to improve cell power, efficiency, and durability.
  • Develop manufacturing procedures for novel architectures.
  • Work with subscale and stack teams to identify scaleup limitations and implement innovative solutions.
  • Work with subscale and stack teams to develop operational strategies that improve cell power, efficiency, and durability.
  • Rapidly prototype bench-scale electrochemical flow cells to test new chemistries, architectures, materials, and stack configurations before committing to pilot-scale builds.
  • Design and iterate cell & stack hardware, including bipolar plates, flow fields, manifolds, end plates, gaskets, and compression/clamping systems to improve cell power, efficiency, and durability.
  • Own mechanical design and tolerancing of cell and stack components in CAD (SolidWorks or equivalent).
  • Work with Voya's product development team to scale and demonstrate cells from bench to pilot and production-intent systems.


Qualifications:

  • Track record of developing novel electrochemical cell architectures, with hands-on experience building the physical stack hardware for flow-based systems (e.g. fuel cells, flow batteries, electrolyzers), specifically bipolar plates, flow fields, manifolds, gasket/sealing systems, and compression hardware.
  • Proficiency in CAD-based mechanical design and DFM; comfortable moving from drawing to prototype to test stand yourself, not just handing off to a mechanical team.
  • Mechanical background with exposure to electrochemistry preferred.
  • Experience working with cross-functional teams, preferably for system or device development.
  • Ability to operate in a fast-paced, start-up environment.
  • Results-oriented with a strong sense of urgency.


Location: Hayward, CA. Full-time on-site.


What we offer:

  • Competitive salary and equity compensation commensurate with experience
  • Unlimited PTO
  • 100% employer paid medical, dental, and vision coverage
  • 401(k) plan

Role snapshot

Job type

Full-time

Email

aurora@voya.energy

Required skills

Electrochemical cell architecture designHands-on stack hardware fabrication for flow-based systemsBipolar plate and flow field designGasket, sealing, and compression/clamping system designCAD mechanical design (SolidWorks or equivalent) and tolerancingDesign for Manufacturing (DFM) for cell and stack componentsMaterials selection and optimization for cathode, anode, membrane/separator, and electrolyteRapid prototyping and bench-scale electrochemical flow cell testingManufacturing process development and scale-up implementationStack scale-up identification and pilot demonstrationCross-functional collaboration with materials scientists and product teamsElectrochemistry knowledge applicable to mechanical cell designTechnical leadership and setting technical direction

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Mechanical Cell Engineer at Voya Energy in Hayward | Scovai | Scovai