Great people

to build a great

launcher

General loads shape everything: structure sizing, subsystem margins, and verification plans. Your work will directly influence performance, reliability, and the pace at which we design, test, and fly.

• Own in‑flight general loads for Zephyr and keep them consistent as the design evolves.

• Define transportation & integration loads used for sizing and verification of launcher structures and Stage 0.

• Act as a system interface with Mission Analysis, GNC, and SMS (structures mechanical systems) to ensure load cases align with mission profiles and control strategies.

• Contribute to design and program reviews (subsystems, stages, and full Zephyr milestones), providing clear rationale, data, and recommendations.

• Drive requirements, assumptions, and documentation so downstream teams can design with confidence.

• Engineering degree (or equivalent experience) with a strong mechanical/structures foundation.

• Hands‑on experience with loads calculation, mechanical simulation, and meshing.

• Working knowledge across mission analysis, GNC, aerodynamics, dynamics, and thermal (you don’t need to be the expert in each—just comfortable collaborating).

• Clear communicator who can organize complex information and align multiple teams.

Nice to have :

• Familiarity with FEA/FEM and scripting (e.g., Python/Matlab) to automate studies.

• Experience preparing test or verification plans linked to load cases.

• Exposure to launchers, spacecraft, or high‑performance structures.

The Fluid & Propulsion Systems Department is responsible for the development of the launcher’s main engines, auxiliary propulsion, onboard fluid systems, as well as ground and test facilities fluid systems.

Within this department, the Fluid Systems team specifically focuses on:

• Designing fluid systems based on functional needs, system architecture, and fluid selection for all company fluid systems (launcher, ground, and test facilities).
• Choosing the appropriate components to meet the functional requirements.
• Modeling system behavior to validate design choices.
• Defining operation procedures for the fluid systems.
• Ensuring safety and reliability across all designed systems.
• Analyzing test results to verify system behavior and performance.
• Optimizing existing systems to improve reliability and efficiency.

As a Group Lead – Fluid System Engineer, you will play a dual role, combining technical expertise and managerial leadership. While actively contributing to the design and development of the launcher’s fluid systems, you will also be responsible for leading and structuring a team of 8 full-time engineers, ensuring efficient project execution, resource management, and talent development.

Technical leadership and coordination

• Oversee the design, development, and optimization of fluid systems for the launcher, ground, and test facilities.
• Ensure that system functional needs, architecture, fluid selection, and component choices align with performance, reliability, and safety requirements.
• Guide the team in system modeling, test analysis, and optimization to improve efficiency and robustness.
• Ensure smooth coordination with other engineering teams, integrating fluid systems within the overall vehicle architecture.
• Contribute to strategic planning and technical roadmaps, in collaboration with the Department Head.

Team management

• Lead, support, and mentor a team of engineers and interns, fostering a collaborative and high-performance environment. Promote a culture of knowledge sharing, technical efficiency and continuous improvement.
• Define human and budgetary resource needs, in alignment with the Team Lead and company priorities.
• Conduct performance reviews, goal setting, and career development discussions, in coordination with HR.
• Support the team’s skills development by identifying relevant training opportunities.
• Oversee team well-being and engagement, including team-building initiatives and fostering a positive work environment.

• Bachelor’s or Master’s degree in mechanical, aerospace, chemical, or energy engineering (or equivalent).
• 5+ years of relevant experience in the aerospace, chemical, or energy industry (or similar), including experience in a leadership or coordination role.
• Strong expertise in fluid mechanics, thermodynamics, and system modeling.
• Knowledge of valves, pressure regulators, and industrial piping is a plus.
• Hands-on experience with modeling software (EcoSim), CAD tools (NX, Catia), CFD tools (Fluent, Star CCM+), and programming languages (Python, Matlab, Fortran) is highly appreciated.
• Strong team leadership, mentoring, and interpersonal skills.
• Excellent communication skills and ability to work cross-functionally.
• Fluent in English (French is a plus).