Senior Mechanical Engineer

Senior Mechanical Engineer Location: Chorley (4-day working week) Rate: Up to £57 per hour, Outside IR35 Contract: 12 months Start: ASAP We are seeking an experienced Senior Mechanical Engineer for a 12-month contract…

Outside IR35 Engineering
Pay rate £50 – £57/hour
Contract type Contract
Posted 13 October 2026

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About this contract

Outside IR35

Senior Mechanical Engineer

Location: Chorley (4-day working week)
Rate: Up to £57 per hour, Outside IR35
Contract: 12 months
Start: ASAP
We are seeking an experienced Senior Mechanical Engineer for a 12-month contract supporting engineering design activities within a highly regulated engineering environment.
This role will involve developing and substantiating mechanical design solutions from concept through to detailed design, ensuring compliance with relevant legislation, industry standards and nuclear safety requirements.

Key Responsibilities

Develop concept, scheme and detailed mechanical designs, including 3D models, engineering drawings and technical documentation.

Produce design risk assessments, support engineering calculations and work closely with stress engineers to substantiate designs.

Develop technical files and support CE Marking / UKCA conformity assessments.

Ensure designs comply with relevant legislation, codes and standards, including the Machinery Directive, PUWER, LOLER and CDM.

Participate in design reviews, verification and validation activities, ensuring quality and compliance throughout the design lifecycle.

Collaborate with multidisciplinary engineering teams and support designs through manufacture, assembly, testing and commissioning.

Essential Experience

Significant mechanical design engineering experience within a complex engineering environment, ideally nuclear, defence or other highly regulated industries.

Experience with gloveboxes and associated mechanical equipment.

Strong knowledge of the Machinery Directive, CE Marking / UKCA requirements and technical file preparation.

Experience applying BS 8888 to engineering drawings and technical documentation.

Experience in design verification, validation, risk assessments and engineering substantiation.

A relevant engineering degree (Level 6 or equivalent); professional registration desirable.

Strong understanding of configuration control, design assurance and engineering standards.
Security: SC clearance preferred, although candidates eligible to obtain SC clearance will also be considered.

The Opportunity

Up to £57 per hour, Outside IR35.

12-month contract with an ASAP start.

Four-day working week.

Based in Chorley

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