Sr. Mechanical Design Engineer

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

An immediate opportunity exists for a qualified candidate to participate in the product design and development of large-scale hydrogen generators. The large-scale products have recently been introduced to the market with the development of cost reduced and larger scale products under way. This position requires a mechanical engineer with a strong background in mechanical design, complex system assembly and a broad knowledge of mechanical engineering fundamentals to participate in the design of these systems.

Salary Range: $90,000-$115,000
Open to remote opportunity


  • Develop, design, and select components for liquid and gas system assemblies, including fabrication.
  • Prepare and maintain bills of materials, drawings, and documentation for complex hydrogen generators and hydrogen production plants.
  • Development of specifications for vendor designed / fabricated hardware with follow-on shop inspections of equipment, including piping, vessels, structures, etc.
  • Develop general arrangement layouts of equipment and support site construction design details, equipment handling and installation, etc.
  • Collaborate with other departments such as cell stack design, manufacturing/fabrication, and equipment vendors to ensure proper system design
  • Design for compliance to various industry standards (US and international).
  • Provide system or sub-system technical direction overseeing engineers, vendors or 3rd-party designers for compliance with industry practices and defined specifications. This includes component, sub-system or plant-level design, handling, installation, and testing.
  • Support manufacturing partners , as needed, to maintain design configuration, best practices and quality of existing product designs.
  • Model or define parameters for analyses for mechanical strength, shipping/installation forces, etc. utilizing commercially available analysis.
  • Develop and support critical engineering-driven product documentation such as design files, installation, operation and maintenance manuals, hazard evaluations, etc.
  • Support the project implementation team, including evaluation of customer requests for site design, construction, installation, and operation feedback.
  • Mentoring of Junior Mechanical Engineers.



Bachelor’s degree in Mechanical Engineering or related field.

Required skills and abilities

  • 5-7 years minimum of industry related experience (Hydrogen systems (preferred), large-scale chemical processing, gas and liquid delivery, fluid systems in power plants, or water treatment systems or plants).
  • Commercial products or plant design experience.
  • Experience with 3D CAD software including solid modeling (preferably with PTC Creo).
  • Experience with finite element analysis (preferably with PTC CREO Simulate); computational flow dynamics (CFD) experience is a Structural or construction design a bonus.
  • Familiarity with piping system design standards, materials, and construction methods (ASME, PED, etc.) strongly preferred.
  • Experience with conventional manufacturing methods required.
  • Motivated self-starter with high level of initiative and creative approach to problem.
  • Excellent verbal and written communication.
  • Strong organizational skills and ability to balance multiple.
  • Capable of working well in a multi-disciplinary team environment with high degree of collaboration, especially with 3rd party design contractors and partners.
  • Limited travel could be required to vendor or customer sites.

Preferred skills and abilities

  • New Product Introduction (NPI) experience preferred.
  • Experience working with electromechanical devices is a plus.
  • Strong working knowledge of Microsoft Office; familiarity with ERP is a plus.
  • Experience with large material (including ISO containers) handling, shipping, especially international is a plus.


  • Attention to Detail/Accuracy
  • Problem Solving Skills
  • Communication
  • Time Management; priority goals
  • Critical Evaluation
  • Relationship Management
  • Consultation
  • Ethical Practice


  • Nel will only employ those who are legally authorized to work in the United 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

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.

This position will be open to relocation benefit.


To apply, please follow these steps:

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

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