Apprentissage – CHEMICAL REACTOR LAB ENGINEER (f/m/d)

PRONœ is an ocean CO2 removal startup based in France. We restore the ocean’s natural capacity to permanently remove CO2 from the air in a sustainable, scalable, and asset-light manner. PRONœ ’s approach has been internationally praised as a differentiated, top-tier solution by institutions such as MIT, Frontier and XPrize.

Join us to bring your creativity and knowledge to support the deployment of innovative deep tech systems at lightning speed while collaborating with transdisciplinary, international partners. You will integrate a determined, dynamic and international team.

Context

While closely collaborating with the REACTOR PROCESS ENGINEER, you will be a part of our Engineering team, contributing to the design of one of our chemical reactors. You will participate and contribute to projects related to kinetic determination, analytical tests, and data treatment. Thus, you will help PRONœ achieve critical milestones in our technical and industrial project while gaining valuable, first‑hand insights into entrepreneurship, sustainability, technology innovation.

Main Missions

• Perform laboratory tests using chemical reactors.
• Conduct quantitative analytical testing of solutions (e.g., titration).
• Contribute in 2D and 3D modelling of chemical reactors.
• Analyze experimental data, identify trends, propose improvements, and reporting.

Education

Be enrolled in a university that offers a “contrat d'apprentissage” (apprenticeship contract). Advanced student in chemical, process or mechanical engineering or similar.

Relevant Experience

Use of laboratory equipment and reactors, use of analytical tools, data treatment, kinetic determination, modelling (nice to have).

Relevant Industries

Water treatment, chemical production, environmental, wastewater treatment, food industry, and pharmaceutical industry.

Skills & Behaviors we expect

• Proficiency in scientific English, good writing, and oral communication skills are necessary.
• Technical skills: experimental work and/or mathematical modelling, chemical engineering, Microsoft Office, use of software.
• Autonomy, flexibility and adaptability are a must, together with a results‑oriented mindset.
• A pragmatic, autonomous, and rigorous individual with analytical and synthetical thinking.
• An open‑minded, humble, reliable and trustworthy team player.

Practicalities

• Position based in Les Loges-en-Josas (Paris area, France).
• Approximate start date: from as early as September 2026.