Job Title: Lead Commissioning Engineer - Mechanical Location: Sellafield (Hybrid working available at line manager's discretion) Rate: £54.63/hour (Umbrella) Start Date: ASAP Contract: Until end of project About the Role We are currently recruiting for a Lead Commissioning Engineer - Mechanical to join a major nuclear commissioning project. This is a senior-level position leading commissioning activities, with responsibility for ensuring safe delivery, managing documentation, coordinating technicians, and maintaining compliance throughout all testing phases. You'll work in a dynamic and high-hazard environment where safety, leadership, and attention to detail are critical. This is an excellent opportunity for experienced commissioning professionals to contribute to a long-term infrastructure programme that supports national decommissioning goals. Key Responsibilities Act as a safety role model, promoting a zero-harm culture across all workstreams Lead and coordinate a team of commissioning engineers and technicians Manage all testing activities and ensure adherence to commissioning processes Oversee the preparation and execution of commissioning test documentation Liaise with stakeholders, including regulatory compliance representatives Use completions management systems for work planning, progress tracking, and handovers Manage commissioning aids, field data, and documentation Participate in design reviews and drive continuous improvement Requirements Time-served or equivalent background in mechanical engineering HNC or equivalent qualification preferred (or a path to achieving it) Demonstrated experience in project commissioning, especially with process systems, vessels, and pumps Familiarity with completions management systems (e.g., Go Completions) Strong organisational and scheduling skills Eligible to obtain BPSS and P4 Security Clearance Why Apply? Competitive umbrella pay rate of £54.63/hour Flexible working options (hybrid) Long-term contract with a nationally significant project Opportunity to lead a skilled team in a high-profile commissioning role Apply now to take a leading role in delivering safe and effective mechanical commissioning for one of the UK's most important infrastructure projects. Randstad CPE values diversity and promotes equality. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. We encourage and welcome applications from all sections of society and are more than happy to discuss reasonable adjustments and/or additional arrangements as required to support your application. Candidates must be eligible to live and work in the UK. For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business