Mechanical Design Engineer, Cell Stack

Wallingford, CT, 

United States

Are you passionate about the energy transition? Join us.

Nel is a global, dedicated hydrogen company, delivering optimal solutions to produce, store, and distribute hydrogen from renewable energy. We serve industries, energy, and gas companies with leading hydrogen technology. Our roots date back to 1927, and since then, we have had a proud history of development and continuous improvement of hydrogen technologies. Today, our solutions cover the entire value chain: from hydrogen production technologies to hydrogen fueling stations, enabling industries to transition to green hydrogen, and providing fuel cell electric vehicles with the same fast fueling and long range as fossil-fueled vehicles – without the emissions.

About the position

A key contributor in component design: analysis of mechanical stress and deformation, fluid flow, load distribution, tolerancing, and design for manufacturability, including preparation of detailed documentation and in-depth technical review.

Salary Range: 95k-115k


  • Develop and design components and assemblies for electrochemical cell stacks, to meet functional requirements while minimizing cost. Order and inspect components for compliance with specifications
  • Perform engineering calculations to support design concepts, including stress analysis for mechanical robustness, CFD for uniform fluid distribution, and tolerance models
  • Use PTC Creo to create detailed drawings, assemblies, and bills of materials
  • Use equipment and hand tools to assemble and test cell stacks and associated systems
  • Prepare test plans, technical reports, drawings, and assembly processes
  • Perform research and testing to extend electrochemical cell stack functionality, identify novel approaches for cost reduction or increased reliability, and find new applications for existing technology elements
  • Collaborate with manufacturing team to design for manufacturability and volume production considerations, develop inspection criteria, and evaluate component suppliers
  • Support manufacturing team to disposition non-conforming product and assist technical service group with troubleshooting field returns



Bachelor’s or Master’s in Mechanical Engineering or equivalent.

Required skills and abilities

  • 5-10 years of industry related experience (fuel cells, fluidics, gas separation, flow batteries,
    piping systems, pressure vessels)
  • 5 plus years of experience designing and analyzing precision components for complex assemblies
  • Capable of working well in a multi-disciplinary team environment with high degree of collaboration
  • Design of pressure containment devices or sealing systems or precision components
  • Familiarity with manufacturing processes including molding, machining, forming, and joining methods
  • Work experience supporting manufacturing operations
  • Supplier interaction and evaluation
  • Working familiarity with safe work practices and hazard analysis

Preferred skills and abilities

Experience with 3D CAD (PTC CREO strongly preferred). SolidWorks experience is
also acceptable
• Experience with FEA (PTC Simulate or ANSYS preferred)


  • Collaboration
  • Initiative
  • Creative problem solving
  • Communication
  • Time management
  • Planning and execution
  • Business ethics
  • Commitment
  • Results Driven with demonstrated
  • Follow through


  • Nel will only employ those who are legally authorized to work in the United States.
    This is not a position for which sponsorship will be provided.
  • Individuals with temporary visas such as E, F-1, H-1, H-2, L, B, J, or TN or who need
    sponsorship for work authorization now or in the future, are not eligible for hire.

Equal opportunity employer

Nel is an equal opportunity employer and all qualified applicants will receive consideration for employment regardless of race, colour, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law. All employment is decided based on qualifications, merit, and business need.


To apply, please follow these steps:

  1. Download and complete this application.
  2. Email the completed application, your resumé, and a cover letter to