Overview

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. West London / Hybrid (3-4 days WFH).

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

• 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
• 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
• 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)

Seniority level

• Mid-Senior level

Employment type

• Full-time