???About Assystem

Assystem is a global leader in engineering, digital, and project management services, supporting the UK's energy transition since 1996. With 7,500 Switchers worldwide, we combine engineering expertise with digital innovation to deliver complex, low-carbon infrastructure. In the UK, we support landmark nuclear projects like Hinkley Point C, Sizewell C, and SMR programmes.

Why Join the Community of Switchers?

Join one of the three largest nuclear engineering companies in the world. Work on energy transition missions, collaborating with top teams on projects like Hinkley Point C, Sizewell C, and SMRs. Become part of a global community driving innovation and excellence daily.

Job Description

The Job Mission
We are seeking a Mechanical Design Engineer to support the delivery of operating equipment, specifically valves and fluid handling equipment. This is a hybrid role (2–3 days in the office) involving collaboration with external suppliers and ensuring successful equipment integration into the plant.

Your future team will rely on you for:

• Creating and amending technical specifications for new equipment scopes.
• Performing surveillance and approval of contractor deliverables and design activities.
• Supporting technical and project meetings with suppliers and internal stakeholders.
• Assisting in resolving multi-disciplinary technical issues, including interface queries and design changes.
• Coordinating technical specialists to review deliverables and resolve concerns.
• Reviewing and providing input on contract amendments and exemptions.
• Liaising with RD and client teams to ensure proper equipment integration.

My Profile

Essential Skills & Qualifications

• Strong understanding of mechanical interfaces (piping, fluids, radioprotection, safety).
• Good knowledge of valves and fluid handling systems.
• Ability to produce high-quality technical specifications.
• Understanding of mechanical engineering regulations in safety-critical environments.
• Experience working on large-scale industrial projects.

Ready to shape the future? Join your future team on-site at one of Europe's most ambitious nuclear power projects. Be part of a collaborative mission to uphold the highest construction and quality standards.

We are committed to equal treatment of candidates and promoting diversity. We believe that diverse backgrounds and perspectives foster innovative solutions. Skills, talent, and the ability to dare are what matter! Bring your unique contributions and help us shape the future.

Graduate Scheme Opportunity

If you're a prospective or recent graduate, Assystem offers the "Switch to Grow UK Graduate Scheme," providing hands-on experience in engineering, digital services, and project management through critical energy projects.

Join the challenge of the century: accelerating the switch to low-carbon energy!