Process Development Engineer

About Dioxycle

Dioxycle is pioneering breakthrough carbon utilization technologies that convert industrial emissions into sustainable chemicals with unprecedented energy and cost efficiency. By displacing fossil fuels for the production of key chemicals, Dioxycle has the potential to ultimately reduce over 800 million tons of CO2 per year, representing over 2% of the world's emissions.

At the core of our process is a novel "carbon electrolyzer", a machine capable of using just electricity and water to convert carbon emissions back into valuable everyday essential chemicals. Our team is innovating across chemical, mechanical and system engineering to turn carbon transformation into an economically feasible, industrial reality through this completely novel technological approach. Having completed our industrial‑scale electrolyzer prototype, we are now working with our chemical and downstream offtakers towards first‑of‑a‑kind plant deployment and subsequent commercial roll‑out.

We are supported by world‑class funders including Bill‑Gates‑founded Breakthrough Energy Ventures, Lowercarbon Capital and Gigascale Capital and have raised $40M to date. We operate from two centres in Paris and California.

Process Development Engineer

Dioxycle is seeking a highly skilled and hands‑on Process Development Engineer to join our team at a pivotal phase of transition from R&D to industrial piloting and early commercial deployment. We are looking for a process engineer with real industrial‑scale experience who can bring a critical, hands‑on, plant‑minded perspective to our process design and de‑risk our path to commercial scale.

Responsibilities

• Simulate, model, and optimize process flowsheets (notably using Aspen Plus) to support process design and de‑risking decisions
• Benchmark and screen candidate technologies, and engage directly with technology suppliers to identify and validate the right solutions for our process
• Scope, follow up, and steer external technical and experimental studies run by suppliers and engineering partners
• Contribute hands‑on to pilot/skid‑scale experimental campaigns (e.g. purification skids, evaporators), particularly during peak testing periods
• Work in close, day‑to‑day partnership with our principal process engineer to translate research‑stage thinking into industrially robust process designs
• Bring an industrial/operations mindset to challenge and stress‑test process choices against real plant constraints

Qualifications

• Master’s degree in Chemical Engineering, Process Engineering or a related field
• 3+ years of process engineering experience gained in an industrial setting (large industrial group strongly preferred)
• Strong command of Aspen Plus for process simulation and optimization
• Domain expertise in at least one of the following is a strong plus:
  • Liquid organic chemicals (alcohols, carboxylic acids) with experience in purification and separation processes, notably distillation columns
  • Syngas handling, treatment including PSA, cryogenic separation, drying
  • Ore refining/processing (lithium, nickel, bauxite) with experience extracting metal oxides from mined rock
• Hands‑on comfort with experimental and pilot/skid‑scale work
• Strong fluency in English, with the ability to work closely and effectively in a tight‑knit technical binôme
• Good project management skills: planning, coordination, supplier follow‑up, and milestone tracking
• A genuine appetite for moving from a paper‑based idea to real, industrial‑scale execution

Desired Mindset

• Exemplary work ethic and self‑driven attitude
• Street‑smart: you don't take no for an answer and will figure out a way to solve anything with the means available
• Commitment to the mission and ambition and to creating a kind, high‑performance and fun atmosphere at work (100% on‑site role)
• Passion for innovation and problem‑solving attitude
• Dedication to investing time and effort for the betterment of the team
• Going the extra 20% that makes a good deliverable into an outstanding deliverable
• Humble, low‑ego and curious

Benefits

• Competitive compensation packages
• Generous Employee Stock Ownership plans
• Health Insurance: Medical, dental, and vision coverage
• Ergonomic work stations & state‑of‑the‑art equipment

Candidate must be based in or open to relocating to Paris, France.