Senior Process Engineer

Senior Process Engineer West London / Hybrid (3-4 days WFH) Permanent | £55,000 - £70,000 + Equity We're working with an ambitious and well-funded cleantech company based in West London, currently seeking a Senior Process Engineer to support the scale-up and commercialisation of their novel hydrogen technology. The Role As Senior Process Engineer, you'll be responsible for driving process engineering activities across a unique electrochemical platform. Working closely with the internal tech team, partners, and vendors, you'll lead the development and integration of systems operating under high-pressure and high-temperature conditions. Key Responsibilities: Lead and deliver process engineering design (PFDs, P&IDs, mass/energy balances) Develop specifications for equipment and instrumentation Perform detailed design calculations and process modelling Collaborate with subcontractors and partners to drive progress toward TRL6 by 2026 and pilot-scale delivery by 2027 Support procurement, hazard/risk assessments, and safety-focused design Assist with lab-scale testing and contribute to scaling efforts Take part in bid writing and customer-facing proposal work What They're Looking For Essential: MSc (or higher) in Chemical/Process Engineering Experience working with high-pressure/high-temperature systems and flammable gases Proficiency in process modelling tools (e.g., Aspen, HYSYS, PRO II, or Unisim) Proven delivery of projects across the full lifecycle: feasibility through to operations Strong communication skills and a proactive, safety-first mindset Comfortable in a start-up environment with self-starting, problem-solving attitude Desirable: Background in electrolysis, fuel cells, or hydrogen system design Experience working with supercritical water or oxygen systems Familiarity with thermal design tools (e.g., HTRI) and CFD Chartered status Benefits & Perks Equity participation through a tax-efficient share scheme 25 days holiday + public holidays (option to buy 5 more) Birthdays off & milestone celebrations Flexible working hours and location (including working abroad) Monthly team days & lunch outings 3 months full paid parental leave (maternity and paternity) Professional development budget + fees covered 5% employer pension contribution Employee referral bonus scheme Interested? Our client welcomes applications from candidates with diverse backgrounds and encourage individuals who may not meet every single requirement to apply. Your unique perspective could be just what this team needs. Please note: Our client is currently unable to sponsor overseas candidates