Mechanical Designer

Warrington, England, gb on site Until 9/20/2026 First posted July 22, 2026 Last posted July 22, 2026
Job 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.

Senior Mechanical Designer

Warrington

Permanent / Contract

The Mechanical Senior Designer is required to deliver mechanical work scope, production and checking, reporting to a Senior / Principal Engineer. They will need to produce detail drawings using Inventor / AutoCAD software (including familiarity with Inventor Vault), including GA’s, manufacturing details, Layout drawings (cell and C3 & C5 Alpha Glove boxes) Flow diagrams and parts lists.

BS8888 

GD&T

Manufacturing Experience 

Your Background

  • Essential Experience:
    • Experience of working within a highly regulated industry, preferably within the nuclear industry
    • Recent experience of designing Alpha Gloveboxes and the operating philosophies associated with providing a safe manual glovebox process
    • Experience in designing and Laying out of Glovebox equipment.
    • Experience using Inventor / AutoCAD is essential
    • Experience of ‘Design for Assembly’ within a nuclear facility
    • The candidate will need to manage their own workload and drive completion of the work scope
    • The candidate will need to be able to communicate effectively with team members and with the Client

    Essential Qualifications:
    Microsoft Office Packages, Inventor, AutoCAD

Security clearance:

Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum SC level.

NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.

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.

About this role

Summary

Designs, checks, and produces detailed mechanical drawings for nuclear projects.

Job title

Senior Mechanical Designer

Experience level

senior level

Industry

nuclear

Location requirements

Warrington, UK, on-site work only

Salary

Not specified

Management role

No

Skills & keywords

Required skills

inventorautocadBS8888GD&Tmanufacturing

Preferred skills

None specified

Specializations

mechanical designnuclearinventorautocadgloveboxes
Locations

Structured locations inferred from the posting.

Warrington, UK

On-site City