Design Engineer - Mechanical

About the role

Ohmium's Electrolyzer stack engineering team is seeking a Design Engineer - Mechanical to own mechanical design and analysis for PEM Electrolyzer stack components and assemblies. Day-to-day work includes designing and developing stack components such as bipolar/end plates, gaskets, seals, current collectors, tie-rod assemblies, and manifolding using SolidWorks or equivalent CAD tools; creating detailed part and assembly drawings with GD&T, tolerance dimensioning, and third-angle projection per ASME standards; performing engineering analysis including tolerance stack-up, structural/stiffness calculations, sealing calculations, flow field/pressure drop analysis, and material compatibility assessments; leading or contributing to DFMEA studies; developing and validating stack assembly processes; authoring component specifications; and collaborating cross-functionally with materials, manufacturing, quality, supply chain, and testing teams to bring reliable, manufacturable stack designs from concept through pilot to production scale. Location: Bengaluru, India. Work model: not specified in the posting.

What you’ll do

• Design and develop mechanical components for PEM Electrolyzer stacks, including bipolar/end plates, gaskets and seals, current collectors, tie-rod/tension assemblies, and manifolding, using SolidWorks
• Create and maintain detailed part and assembly drawings with GD&T, tolerance dimensioning, and third-angle projection per ASME standards.
• Perform engineering analysis such as tolerance stack-up, structural/stiffness calculations for endplates, sealing calculations for gaskets, flow field analysis like pressure drop calculations for Bipo
• Lead or contribute to DFMEA studies for design changes (e.g., materials, coatings, surface finishes), identifying failure modes, causes, and effects, and defining mitigations.
• Develop and validate stack assembly processes, including uniform torquing/compression strategies, torque sequencing, and pressure distribution verification.
• Author and maintain detailed component specifications for stack mechanical components, including dimensional, material, and performance requirements.
• Collaborate with supply chain and quality teams to validate that specifications are achievable at the intended production volume, and refine specs based on DFM/DFA feedback.
• Collaborate with manufacturing and quality teams to define assembly work instructions, inspection & acceptance criteria, and fixture/tooling requirements.

What you’ll bring

• Bachelor's degree in mechanical engineering or a related discipline (master's degree a plus).
• 3-5 years of hands-on experience in mechanical design, product development, and engineering execution across the product lifecycle, ideally in electrolyzers, fuel cells, batteries, pressure vessels, h
• Strong proficiency in 3D CAD (SolidWorks preferred) and 2D drawing creation for sheet metal and machined components with proper GD&T and tolerancing practices.
• Practical experience with DFMEA methodology and root-cause/failure analysis (e.g., 8D).
• Hands-on experience with sheet metal, plastic part, and machined component design, and manufacturing processes such as injection moulding, casting, machining, and fabrication.
• Ability to develop mechanical designs, perform engineering calculations, create technical drawings, and execute design verification activities.
• Strong communication and problem-solving skills, with experience producing clear engineering documentation.

Skills

Education

Bachelor’s degree in mechanical engineering or a related discipline (master’s degree a plus).