Job Description:
Key Responsibilities
- Lead the integration of multi-layer electrolyzer stack components (MEA, PTL, gaskets, bipolar plates) to ensure proper fit, function, and performance.
- Define and optimize stack compression strategy, including compression windows, tolerances, and assembly sequences.
- Analyse and control load transfer mechanisms across layers under hydraulic pressing and bolt torquing conditions.
- Ensure uniform contact pressure distribution to balance sealing integrity, electrical contact resistance, and component durability.
- Evaluate mechanical behaviour of layers (elastic/plastic deformation, creep, stress relaxation) under assembly and operating conditions.
- Improve pressure handling capability of the stack, including resistance to leakage, deformation, and mechanical failure.
- Correlate mechanical compression with electrochemical performance (efficiency, voltage losses, degradation).
- Develop and use FEA models to predict stress, strain, and contact pressure distribution across the stack.
- Design and execute validation tests (compression mapping, torque-tension, leak and pressure cycling tests).
- Collaborate cross-functionally to ensure design robustness, manufacturability, and scalability of stack integration solutions.
Required Qualifications
- B.E or M.E in Mechanical or Chemical or Material science background
- 5 to 10 years of experience required in Electrolyzer, fuel cell, or similar electrochemical stack systems or EV systems
- Mechanical integration of multi-layer assemblies.
- Strong understanding of:
- Stack compression mechanics
- Load transfer through layered structures
- Torque-preload relationships in bolted joints
- Experience with:
- Hydraulic press assembly processes
- Gasket sealing mechanics and material behaviour
- Porous transport layer (PTL) compression characteristics
- Ability to interpret:
- Stress-strain curves
- Contact mechanics
- Nonlinear material behaviour.
The ideal candidate will have deep expertise in load transfer mechanisms, compression behaviour, and torque-induced sealing performance, along with a strong understanding of electrochemical stack physics.
Ohmium is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
Skills Required
- B.E. or M.E. in Mechanical, Chemical, or Materials Science
- 5 to 10 years experience in electrolyzer, fuel cell, or similar electrochemical stack systems or EV systems
- Mechanical integration of multi-layer assemblies (MEA, PTL, gaskets, bipolar plates)
- Strong understanding of stack compression mechanics
- Strong understanding of load transfer through layered structures
- Strong understanding of torque-preload relationships in bolted joints
- Experience with hydraulic press assembly processes
- Experience with gasket sealing mechanics and material behaviour
- Experience with porous transport layer (PTL) compression characteristics
- Ability to interpret stress-strain curves, contact mechanics, and nonlinear material behaviour
- Experience developing and using FEA models to predict stress, strain, and contact pressure distribution
- Design and execution of validation tests (compression mapping, torque-tension, leak and pressure cycling tests)
What We Do
Ohmium's mission is to accelerate the adoption of green hydrogen to decarbonize hard-to-abate sectors and enable a low-carbon future. Ohmium designs, manufactures and deploys modular, scalable proton exchange membrane (PEM) electrolyzer systems that enable cost-competitive green hydrogen production. Ohmium’s systems are vertically-stackable and integrate advanced power electronics, delivering superior value for a wide range of commercial and industrial applications in terms of safety, energy density, scalability and ramp rate. The human-scale electrolyzers are efficient to manufacture, quick to transport and easy to maintain. This versatility enables cost-effective plug-and-play operations that can scale rapidly. Ohmium has a global green hydrogen project pipeline across the U.S., Mexico, Europe and Asia.
