Junior Test Engineer

At Electrogenos, we're building technology to make green hydrogen competitive at scale. We focus on reducing the cost and complexity of hydrogen production so it can replace fossil-based alternatives across real-world applications. We're an early-stage team working at the intersection of electrochemistry, manufacturing, and deployment.We are looking for a practical junior engineer to help us build, commission, and test electrolysers. You will be in the workshop and lab from day one, working alongside senior engineers on stack assembly, rig commissioning, fault-finding, and live test campaigns. You do not need prior electrolyser experience. We will teach you the electrochemistry and the process side, including hot caustic handling, hydrogen and oxygen safety, and commissioning procedures. In return you will gain broad hands-on experience across mechanical build, thermo-fluid systems, instrumentation, and controls, plus a genuine foot in the door of the UK hydrogen industry.

• Assemble electrolyser stacks and test rigs: torque sequences, sealing, leak checks
• Run experimental campaigns: performance characterisation, durability testing, component trials
• Record test data and keep clean test logs
• Support pressure testing, commissioning, and fault-finding
• Build test fixtures and sub-assemblies
• Plumbing and pipework: cutting, bending, fitting tubing, compression fittings, valves
• Fit and route instrumentation: thermocouples, pressure transducers, flow meters, level sensors
• Trace faults across mechanical, fluid, and electrical systems
• Workshop inventory tracking: consumables, spares, long-lead items
• Source parts, raise purchase requests, chase suppliers
• Write and update test procedures, risk assessments, and as-built drawings
• Work safely around hot caustic, pressurised systems, and flammable gases

• Engineering degree (mechanical, automotive, aerospace, chemical, mechatronic), HNC/HND, or hands-on background as a machinist, technician, or fitter

• Confident with hand and power tools, basic machining, and measurement kit

• Solid engineering fundamentals

• Basic instrumentation literacy: pressure, temperature, flow, level

• Safety-first approach

• Writes clearly and takes notes without being asked

• Proactive and flexibility in a fast moving environment

• Problem solving and independent research skills

• Compression fittings (Swagelok, Schwer) or general pipework

• Able to read P&IDs and GA drawings

• Pressurised gas or liquid systems

• DAQ or programming (LabVIEW, Python)

• Hazardous fluid handling or ATEX awareness

• CAD (SolidWorks, Fusion 360, Onshape, or similar)

• Interest in hydrogen, fuel cells, or clean energy

• Full UK driving licence

You're practical, curious, and want to build things. Maybe a recent graduate who spent more time in the workshop than the lecture hall, or a technician looking to move into R&D. You don't need to know anything about electrolysers - we'll teach you. What matters is that you pick up a tool before being asked and take ownership of what lands on your bench.

• Broad hands-on experience across mechanical build, instrumentation, and test engineering
• Experienced engineers who will invest in your development

• A genuine foot in the door of the UK hydrogen industry
• Small team where you see the impact of your work immediately
• Competitive salary and benefits

Electrogenos is building technology to make green hydrogen competitive at scale. We focus on reducing the cost and complexity of hydrogen production so it can replace fossil-based alternatives across real-world applications.

We're an early-stage team working at the intersection of electrochemistry, manufacturing, and deployment. Our approach is practical by design: use scalable materials and processes, and validate performance through close collaboration with partners.

If you want to work on hard problems with real climate impact-and help take breakthrough technology from concept to deployment-join us.