🚀 The Job Mission
This role supports the Systems team by delivering mechanical engineering design for a major nuclear power station.

You’ll ensure mechanical systems are safe, efficient and integrated across disciplines.

Your future team coordinates across layout, civil and procurement to ensure all mechanical requirements are met.

Key responsibilities include:

• Size mechanical components including pumps, fans, tanks, pipework and valves
• Perform thermal-hydraulic modelling using in-house and commercial tools
• Ensure 3D design models align with intended mechanical system functionality
• Develop and update system P&IDs and component datasheets
• Define technical specifications and support procurement documentation
• Review and verify supplier documentation for design consistency
• Contribute to Engineering Change activities related to mechanical systems
• Participate in system gate reviews and stakeholder coordination meetings

🛠 Essential Skills

• Degree in Mechanical Engineering or equivalent
• 3–5 years’ mechanical design experience in a regulated environment
• Skilled in thermal-hydraulic analysis and equipment specification
• Ability to review and update 3D models and P&IDs
• Strong collaboration and stakeholder engagement capabilities
• Effective communicator—both written and verbal
• Comfortable working with Navisworks and Microsoft Office
• Proven experience working to engineering processes and quality standards

✔️ Desired Skills

• Understanding of nuclear safety classification for mechanical equipment
• Experience working in a live industrial or nuclear facility
• Familiarity with design interfaces across civil, layout and I&C
• Basic understanding of I&C integration within mechanical systems
• Technical documentation skills in French (reading/writing)

🌟 Why Apply?

Join Assystem and become a key player in delivering critical nuclear projects that shape the future of energy. Embrace this opportunity to excel in a dynamic environment where your expertise and leadership will drive global innovation.

Benefits include:

• Pension scheme (8% company contribution / 4% personal contribution)
• 25 days’ paid annual leave + bank holidays + option to buy or sell days
• Professional fees reimbursed
• Flexible working
• Employee referral scheme

ASSYSTEMIND3

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.