Job Summary

As a Senior Process Engineer, you will lead the design, development, and optimization of our systems, including reactor engineering and associated thermal and chemical processes. You will play a key technical role in scaling our technology from the laboratory to industrial scale, ensuring high performance, safety, and cost-effectiveness.

You will supervise junior engineers, coordinate cross-functional activities with internal teams and external stakeholders, and act as a technical advisor to the CTO and leadership team.

Main Responsibilities

• Process design and technical leadership 🧠

  • Lead the modelling and simulation of complex chemical and thermal processes using ASPEN and other process design tools.

  • Define the architecture and scaling strategy of core systems: reactors, heat exchangers, pumps, compressors, etc.

  • Conduct advanced thermodynamic analyses to improve energy efficiency and robustness of the process.

  • Supervise and mentor junior engineers and interns within the process team.

• Industrial scale-up & pilot oversight 🏭

  • Define process requirements and operating conditions for pilot and industrial systems.

  • Oversee the design, construction, and commissioning of lab and industrial pilots.

  • Ensure compliance with process safety, environmental, and regulatory standards.

  • Interface with EPC contractors, equipment suppliers, and external engineering firms.

• Innovation & strategic process improvement ⚙️

  • Lead process innovation initiatives to reduce CAPEX/OPEX and improve system performance.

  • Define testing protocols and validation strategies for new process developments.

  • Analyze performance data from pilots and tests to drive iterative process improvements.

  • Support strategic decisions regarding process design choices and industrial partnerships.

Profile

• Master’s or PhD in Process Engineering, Chemical Engineering, or a related field.

• Minimum 5 years of experience in industrial process design, scale-up, and operation, ideally in energy, thermal systems, chemical processes, or CO₂ utilization.

• Proven expertise in process modelling and simulation, particularly with ASPEN or equivalent tools.

• Strong knowledge of heat and mass transfer, reactor engineering, and thermodynamic analysis.

• Demonstrated experience contributing to or managing pilot plant design, construction, and operation.

• Ability to lead technical workstreams independently and collaborate cross-functionally with R&D, mechanical engineering, operations, and external partners.

Additional Assets 💡

• Exposure to startup or first-of-a-kind industrial projects.

• Experience in carbon capture, power-to-X, or fuel synthesis technologies.

• Experience in startup or scale-up environments.

• Familiarity with process safety and regulatory compliance for chemical processes.

Conditions

• 📄 Contract: Full-time (”CDI”)

• 🏢 Location: Campus Air Liquide, Les Loges-en-Josas (France)

• 💰Compensation: competitive salary, starting from €65K gross annual, adjusted according to experience + bonus.

• 💙 Benefits: we offer flexible hours and leave, remote work options, growth opportunities, continuous training, regular team-building events, as well as coverage for health insurance, transportation, and sports activities.

Why Join Us?

By joining Aerleum, you will directly contribute to a technological solution to address the climate emergency 🌱. You will evolve in a stimulating work environment, with a dynamic and committed team, and have a real impact on building a carbon-neutral future 🌍.

Diversity and Inclusion

We strongly encourage applications from all backgrounds and firmly believe that diversity is essential to address climate challenges.