Mechanical Design Engineer – Valves

Assystem GmbH; Bristol; Hybrid; GBP 40,000 - 60,000; Full time

Job summary

A leading engineering firm in the UK is seeking a Mechanical Design Engineer for a hybrid role focused on low-carbon energy projects. The position involves creating technical specifications, approving contractor activities, and coordinating with various teams to ensure equipment integration. Candidates should have strong mechanical interface knowledge and industrial project experience. This role offers an exciting opportunity to contribute to major nuclear projects, fostering innovation and excellence.

Qualifications

• Strong understanding of mechanical interfaces essential.
• Knowledge of valves and fluid systems is crucial.
• Ability to produce high-quality technical documents required.

Responsibilities

• Create and amend technical specifications for new equipment.
• Conduct surveillance and approve contractor deliverables.
• Support technical and project meetings with suppliers.

Skills

Mechanical interfaces (piping, fluids, radioprotection, safety)

Valves and fluid handling systems

High-quality technical specifications

Mechanical engineering regulations in safety-critical environments

Large-scale industrial project experience

Job description

About Assystem

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

Why Join the Community of Switchers?

Join one of the three largest nuclear engineering companies in the world. Here, you'll work on world‑class energy transition missions, collaborating with top teams delivering Hinkley Point C, Sizewell C and SMRs. Become part of an elite global community, driving innovation and excellence every day.

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) and involves working closely with external suppliers and ensuring successful integration of equipment 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 addressing interface queries and design changes.
• Coordinating technical specialists for reviewing deliverables and resolving technical concerns.
• Reviewing and providing input on contract amendments and exemptions.
• Liaising with RD and client teams to ensure proper equipment integration.

Essential Skills & Qualifications

• Strong understanding of mechanical interfaces (piping, fluids, radioprotection, safety).
• Good knowledge of valves and fluid handling systems.
• Capable of producing high‑quality technical specifications.
• Sound understanding of mechanical engineering regulations in safety‑critical environments.
• Previous experience working on large‑scale industrial projects.

Ready to shape the future?

Join your future team on‑site at one of the most ambitious nuclear power projects in Europe. Be part of a collaborative mission to uphold the highest construction and quality standards.

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.

Are you a prospective or recent graduate?

Assystem offers you the opportunity to join our Switch to Grow UK Graduate Scheme, where you'll gain hands on experience in engineering, digital services, and project management by working on some of the world's most critical energy projects.

Be part of the challenge of the century; accelerating the switch to low carbon energy!