Rivan Industries
Senior Mechanical Engineer (Electrolysis)

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About us
Rivan Industries is a synthetic fuel company decarbonising heavy industry. We’re making synthetic fuel cheaper than fossil fuels, sustaining life on earth by keeping the CO2 locked underground.
Engineering at Rivan is about taking technologies that are conventionally treated as low volume, bespoke, and expensive, and rethinking them completely to be mass manufactured, standardised, and ultra low cost. Every design aspect must be re-reasoned from first principles, every part’s existence questioned, and every manufacturing step scrutinised.
We’re looking for a talented Senior Mechanical Engineer to own one of our electrolyser sub-systems to drive that forward, tasked with uncovering new ways of thinking about our system integration, performance, longevity, and manufacturability. If you thrive on a lot of responsibility and tight deadlines, come and build!
The role
Own the design and manufacture of an entire Rivan sub-system, from physics and chemistry, to rolling out of the factory door.
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I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Graduate Consultant — 2026 Scheme
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StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
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Own mechanical design of an electrolyser sub-system, from early stage physics and chemistry, through detailed design, build and commissioning. We need you to:
- Own the concept generation, system architecture, and technical requirements capture
- Design and iterate electrolyser stack structures and sub-system balance of plant.
- Design test-rigs to validate underlying hypotheses quickly and cheaply
- Solve complex fluid and thermal problems, including two-phase gas-liquid flow
- Own and iterate detailed design drawings with our fabrication workshop
- Work closely with process, electrical and controls engineers to integrate the complete system
- Liaise with external vendors to support our development and production
Core skills
- 5+ years professional experience
- Bachelor’s or Masters in mechanical/aero or related field
- System design experience including CAD (SolidWorks), design for manufacture/assembly, part specification and procurement of complex, integrated systems involving moving fluids
- Hands on workshop fabrication and build experience
- Fundamental thermofluids understanding, including pressure loss, heat and mass transfer, and two-phase flow
- Simulation/analytical modelling competency (e.g. python, FEA, CFD)
- Test setup design, running of experiments, and data analysis


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Preferable skills
- Alkaline water electrolysis or other electrochemical processes
Specifics
- £70-90k Salary depending on experience
- Significant share options as part of the early team
- In-person work at our HQ in Bermondsey, South-East London
- Extensive relocation support, including £6000 per year extra to live close to our HQ
- Private health insurance
- Visa sponsorship available
- Unlimited time-off
We encourage exceptional applicants from all backgrounds to apply for this role, even if they do not meet all the requirements listed.
If you don't see a current role that fits, we also welcome open applications via our website.
Apply at Rivan.com
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