Senior Mechanical Design Engineer

Assystem, Switch On
📍 Derby, Derbyshire, United Kingdom 💼 Full-time 🕒 Posted June 06, 2026

Job Description

Company Description

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

Job Description

The Role:  

Reporting to the Turbine Island Lead, the Senior Mechanical Design Engineer will be responsible for developing fluid systems. The Senior Mechanical Design Engineer shall work closely with multi-disciplined teams and the supply chain to help deliver the system design.  

Key Responsibilities: 

Develop 2D CAD drawings, including process flow diagrams (PFD) and process and instrumentation diagrams (P&ID).
Prepare 3D ...

Ready to Apply?

Submit your application today and join our talented team at Assystem, Switch On.

Submit Application

Job Details

  • Location Derby, Derbyshire
  • Job Type Full-time
  • Category architecture-and-engineering
  • Posted Date June 06, 2026
  • Application Deadline July 16, 2026