Senior Principal Mechanical Engineer

Join the Fusion and Modular Nuclear Business Unit. Assystem has an exciting opportunity for a Senior Principal Mechanical Engineer to join our expanding Fusion and Modular Nuclear (FMN) business unit. As leaders in the design and development of new technologies, you will have the opportunity to work across multiple cutting‑edge projects developing technical solutions making net‑zero power generation a reality.

Responsibilities

• Lead and support the development of designs for Personnel Airlocks, Main Equipment Access Hatch, Fuel Transfer Channel, Piping Penetrations, Electrical Penetrations and Specialist Nuclear Doors.
• Conduct DFMEA (Design Failure Mode and Effects Analysis) to identify and mitigate potential failure modes early in the design process.
• Perform HAZID (Hazard Identification Study) to assess and document risks across the system.
• Complete and maintain Human Factors Checklists to ensure ergonomics and usability are conside...