Senior Mechanical Design Engineer

I’m hiring on behalf of a pioneering clean-energy technology company, supporting them in securing an experienced Senior Mechanical Design Engineer for a 3-month paternity cover contract. This role sits within their R&D function and focuses on mechanical design for next-generation electrochemical hardware.

If you're motivated by meaningful engineering challenges and want to contribute to a mission-led organisation aiming to change the future of green energy, this is a great short-term opportunity.

You’ll work closely with the technical leadership team on key mechanical componentry for their novel electrolyser system. Expect high-impact work, rapid iteration, and the chance to influence designs at an early, innovative stage.

• Producing detailed CAD designs and drawings (OnShape preferred; SolidWorks acceptable).

• Delivering fully-specified drawings, BoMs, and design data for manufacturing and procurement.

• Identifying design and process improvements across mechanical components and assemblies.

• Providing technical leadership or support on product development and improvement projects, including working with external suppliers.

• Applying rapid-iteration principles: fast prototyping, fail-fast learning cycles.

• Contributing to design and safety reviews (FMEA, HAZOP).

• Collaborating closely with electrochemical, process, safety, and electrical engineering teams.

• Managing component suppliers and expediting critical parts when needed.

• Degree (BEng or equivalent) in Mechanical Engineering.

• 4+ years’ experience in mechanical design engineering, including component design for high-volume manufacture.

• Strong CAD capability and experience producing engineering drawings to BS8888 standards.

• Experience participating in safety methodologies (e.g., HAZOP, FMEA).

• Self-starter, able to operate effectively in a fast-paced, innovative environment.

• Strong organisational skills and attention to detail.

• Comfortable managing multiple workstreams simultaneously.

• Knowledge of hydrogen systems, electrolysers or fuel cells.

• Familiarity with high-pressure equipment design (ASME VIII div 3, PD5500, EN 13445).

• Experience with corrosive service materials selection.

• Background in early-stage product development and moving designs toward commercialisation.

• Exposure to supercritical water reactor technology.