Principal Mechanical Engineer

Principal Mechanical Engineer

Location:

Warrington or Abingdon (flexible)
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Start Date:

ASAP
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Hours:

37 hours per week (Monday to Friday)
• Hybrid: 2 days in office, 3 days home working

This role supports multi‑disciplinary engineering teams delivering nuclear projects from FEED through detailed design, commissioning, and operational support in regulated environments.

• Deliver and manage mechanical engineering studies and design work
• Produce and review technical outputs such as calculations, specifications, flow diagrams, P&IDs, layouts, and substantiation notes
• Support design development from concept through to detailed design and commissioning
• Contribute to mechanical handling and process system design (including powder and transfer systems in controlled environments)
• Review supplier documentation and technical submissions
• Liaise with internal teams and technical specialists across disciplines
• Support engineering input across operations, maintenance, and decommissioning activities

• Degree in Mechanical Engineering or related discipline
• 8+ years' experience as a Mechanical Engineer
• Experience delivering mechanical design within nuclear or other highly regulated environments
• Strong understanding of design lifecycle (FEED, detailed design, specification, and delivery)
• Experience with mechanical handling or process systems desirable
• Experience working on Sellafield or Magnox projects beneficial
• Membership of a professional engineering body desirable
• Strong communication skills
• Ability to manage workload and meet deadlines independently
• Interest in supporting and mentoring junior engineers
• Eligibility to work in the UK and willingness to undergo security clearance

We celebrate and support diversity and are committed to ensuring equal opportunities for both employees and applicants.