We are looking for a process engineer with real industrial-scale experience (rather than a pure R&D or academic background) who can bring a critical, hands-on, plant-minded perspective to our process design and de-risk our path to commercial scale. You will work in close partnership with our principal process engineer, splitting your time roughly 70/30 between process simulation/design and hands-on experimental work, with the experimental share increasing to roughly 50% of your time during key testing campaigns. Your responsibilities will center around:
Abilities and expertise we are looking for
- Master’s degree in Chemical Engineering, Process Engineering or a related field
- 5+ years of process engineering experience gained in an industrial setting (large industrial group strongly preferred)
- Profiles coming from pure academic R&D, technology licensors, or EPC contractors are not the primary fit for this role
- Profiles with R&D experience embedded within a large industrial group, particularly in a technical support-to-operations capacity, are a strong fit
- Strong command of Aspen Plus for process simulation and optimization
- Domain expertise in either 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
Mindset we are looking for
- Exemplary work ethic and self-driven attitude: you get things done fast and to a high standard and you don't drop the ball
- "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
What we have to offer
- Unique journey: We are an early-stage company with a world-class team and a flat structure.
- Impact: We are building a product that will reshape century-old industrial processes to build a better, more sustainable and resilient world
- People-first: We love our people. We are excited to see one another every morning when coming to work. We choose people and they choose us to share a similar excitement.
- Feedback over ego: We are self-improving whilst helping others grow. We are no-ego doers and we are all responsible for shaping the company.
- International team: We are an international team made up of over 17 nationalities, and hopefully many more soon!
- Fun: We constantly strive to cultivate a great work atmosphere and organize regular team events.
- Competitive compensation packages
- Generous Employee Stock Ownership plans
- Health Insurance: Medical, dental, and vision coverage.
- Ergonomic work stations & state-of-the-art equipment
Our process
- An initial video call (20-30mins) with Grace, Director of People, to discuss Dioxycle's mission, get to know you, understand your career expectations, and answer your questions
- Initial fit video call (30 mins) with Jonathan, Head of Process Development, to answer your more technical questions and talk more about the role
- Technical deepdive interview/case study by video call (1hr-1hr30 mins) with Jonathan, Head of Process Development and Paul, Principal Process Engineer
- Cofounder interview with Sarah, Co-founder & CEO
- Onsite interview including opportunity to tour our technology & meet the wider team
- A series of reference calls with provided contacts
Skills Required
- Master's degree in Chemical Engineering, Process Engineering or related field
- 3+ years process engineering experience in an industrial setting
- Strong command of Aspen Plus for process simulation and optimization
- Hands-on comfort with experimental and pilot/skid-scale work
- Domain expertise in purification/separation (distillation) or ore refining/processing
- Good project management skills: planning, coordination, supplier follow-up, milestone tracking
- Strong fluency in English
- Based in or open to relocating to Paris, France (100% on-site role)
What We Do
Dioxycle is a French-American technology startup that develops breakthrough electrochemical electrolysis technology to recycle industrial carbon emissions into sustainable chemicals, most notably ethylene. By replacing legacy fossil fuel-based crackers with a proprietary carbon electrolyzer powered by renewable electricity, the company aims to decarbonize heavy industry. This process has the potential to abate up to 800 million tonnes of CO2 annually, representing 1-2% of global emissions.







