Lead Process & Commissioning Engineer
About H-DEUX
H-DEUX is a UK engineering company developing FlexiCapture, a compact onboard carbon capture system for ships. It captures CO₂ from engine exhaust using a solid sorbent at a fraction of the size and weight of conventional systems, and it is designed for retrofit to the vessels already in service. The technology is patented and has Approval in Principle from a leading classification society. In 2027 we are building and commissioning a full-scale pilot in partnership with an end user, a classification society and marine engineering specialists, to validate the system before an onboard demonstration.
About the role
Reports to: the CTO.
Location: London area
Salary: competitive, dependent on experience.
You will take FlexiCapture from P&IDs to a running pilot: own the detailed design, procurement, site build, commissioning and safe operation of a full-scale onboard carbon capture test rig and the test site around it.
What you will do
• Lead the detailed design of the pilot: equipment sizing and specification, layout, P&ID development and design reviews.
• Run procurement and vendor management: tender, technical bid evaluation, factory acceptance tests, expediting and delivery to site.
• Plan and manage the site build: contractors, electrical connection, lifting and installation, permits and CDM duties.
• Own process safety: carry the existing hazard studies across to the land site, HAZOP the pilot P&IDs, LOPA where needed, DSEAR for the fuel system, PSSR for pressure equipment and the heating loop, and the site risk register.
• Act as the responsible person for health and safety at the site: risk assessments and COSHH assessments, safe systems of work and permit-to-work, gas cylinder handling, PPE, inductions and safety training, emergency procedures, statutory inspections of pressure and lifting equipment, and incident reporting and investigation (including RIDDOR).
• Execute the commissioning plan: pre-commissioning checks, loop checks with the controls engineer, mechanical completion, punch lists, the safety proof tests (bypass, ESD, trips, gas detection, valve stroke), first exhaust gas, performance test procedures and handover to trials.
• Lead day-to-day operation during the trial period; manage maintenance, spares and reliability so the plant meets its availability target.
• Produce the technical deliverables: design reports, test reports, inputs to the naval architect's integration study and to the class documentation, and lessons learned for the shipboard unit, including the downstream stages the pilot leaves out.
• Mentor the technicians and, as the team grows, line-manage the site team.
Must have
• Degree in chemical, mechanical or process engineering, or equivalent experience; chartered or working towards it.
• 5+ years delivering process plant, packaged systems or pilot and demonstration plants, including at least one project taken from design through procurement, build and commissioning to operation.
• Hands-on commissioning and start-up experience; comfortable on site in PPE, not only at a desk.
• Proven experience building experimental or first-of-a-kind equipment: fabrication and assembly of skids, rigs and pipework, welding and fabrication oversight, working with workshops and fabricators, and modifying equipment on site as the test programme evolves.
• Working knowledge of HAZOP/LOPA, DSEAR, PSSR and CDM, and of writing commissioning and operating procedures.
• Experience running workplace health and safety for a site, and confidence setting and enforcing safety standards; NEBOSH or IOSH certification, or willingness to obtain it.
• Able to specify rotating equipment, heat exchangers, pressure vessels and pipework, and to review vendor drawings critically.
• Organised enough to run procurement, contractors and a schedule without a PMO behind you.
• Clear writer and communicator.
Nice to have
• Gas separation, CO₂ capture, exhaust-gas treatment or heating systems; CO₂ liquefaction.
• Marine engineering background, or familiarity with class rules for emission-reduction systems and SOLAS essential-services requirements.
A bonus if you can also
• Controls and instrumentation literacy: reading cause-and-effect matrices, joining loop checks and acceptance tests.
• Process data analysis: helping run test campaigns and reconcile results with the process model when the trial programme is at full stretch.
Why this role
You will build the first full-scale unit of a technology that can remove CO₂ from a vessel's exhaust, and you will lead the engineering team that follows.
How we work and what we offer
• Salary: competitive, dependent on experience. All roles include 25 days' holiday plus bank holidays.
• Location: on site at our pilot facility in the London area; some travel to partner, supplier and shipyard sites in the UK.
• Small team, direct access to the founders, and a clear line from the pilot to the shipboard product and the roles that follow.
• Applicants must have the right to work in the UK. We are an equal-opportunities employer and welcome applications from everyone.