Process Engineer II/III — CO2 Electrolyzer & Pilot Plant

Oxylus Energy; Branford (CT); On-site; USD 90,000 - 110,000; Full time

Benefits offered by this job

Competitive salary

Medical, dental, and vision coverage

Paid sick days and vacation

401k match

Inclusive work environment

Job summary

Oxylus Energy is seeking a Process Engineer II-III to own the balance of plant for CO₂ electrolyzer integrations and to lead the piping and downstream processing toward pilot scale. The role requires hands-on design, building, commissioning, and operating high-pressure reactor systems with safety as a core focus.

You will collaborate with electrochemists, materials scientists, and mechanical/control engineers to move the process from lab to pilot scale, ensuring compliance with codes and safe

Qualifications

• Bachelor or higher degree in chemical engineering with relevant experience.
• Hands-on experience with high-pressure reactor systems.
• Experience with heterogeneous catalysis and catalyst testing.
• Strong safety focus around pressurized gases and hazardous systems.
• Ability to develop process designs and models and review PFDs/P&IDs.

Responsibilities

• Own the design and specification of the balance of plant (CO2 supply, conditioning, separation, purification, compression, water management, heat exchange, product handling).
• Lead integration of electrolyzer with downstream catalytic processes and match stream conditions.
• Design, build, and operate high-pressure reactor systems and evaluate catalyst performance.
• Develop reactor designs and process models using mass/energy balances, kinetics, and heat transfer analysis.
• Specify pumps, compressors, heat exchangers, separators, valves; liaise with vendors for quotes/deliveries.
• Create and maintain PFDs, P&IDs, and equipment datasheets.
• Conduct process hazard analyses (HAZOP) for high-pressure gas systems and ensure code compliance.
• Commission and troubleshoot integrated systems; analyze data to improve performance.
• Support techno-economic analysis and scale-up planning with design inputs.
• Engineer III: set process architecture, lead pilot-scale design, mentor engineers.

Skills

Reactor design

Mass and energy balances

PFDs & P&IDs

Safety and risk awareness

Problem solving

Communication skills

Education

B.S. Chemical Engineering

M.S./Ph.D. in Chemical Engineering (optional)

Tools

Aspen Plus

Aspen HYSYS

PSA or membrane separation

Job description

Oxylus Energy is seeking a Process Engineer II-III to own the balance of plant for CO₂ electrolyzer integrations and to lead the piping and downstream processing toward pilot scale. The role requires hands-on design, building, commissioning, and operating high-pressure reactor systems with safety as a core focus.

You will collaborate with electrochemists, materials scientists, and mechanical/control engineers to move the process from lab to pilot scale, ensuring compliance with codes and safe