Commissioning Engineer (Mechanical) - Sellafield Site

Location: Sellafield, Cumbria Pay: Up to £50 per hour (Inside IR35) Contract: Full-time, site-based (4 on 4 off rotation or standard site hours) Start Date: ASAP Duration: Until April 2026

About the Role

We're looking for an experienced Commissioning Engineer (Mechanical) to join the team at Sellafield. This is a key role in supporting the safe and efficient commissioning of complex mechanical systems within one of the UK's most challenging and highly regulated industrial environments.

Key Responsibilities

Deliver assigned commissioning tasks safely and effectively in line with established procedures. Control, witness, record, and assess commissioning test results, especially where they impact safety. Plan and deliver commissioning activities on schedule and within budget. Maintain a strong focus on nuclear, radiological, conventional, and environmental safety. Liaise with internal and external stakeholders to coordinate activities and permissions. Review commissioning documentation and test outcomes for accuracy and compliance. Contribute to related project processes, including design reviews, HAZOPs, and risk assessments.

Essential Experience & Qualifications

Proven experience in nuclear mechanical systems commissioning. Background in highly regulated industries - nuclear experience essential, Sellafield experience preferable. Minimum HNC/HND in...