Principal EC&I Commissioning Engineer Reading (fully onsite) £71.34 per hour plus £5 per hour shift enhancement plus £100 per diem for those travelling more than 30 miles to site plus £5 per hour completion bonus 12 hour day 11 days on, 3 days off Must be eliigble for SC clearance, can start on BPSS We're seeking a Principal EC&I Commissioning Engineer to lead commissioning activities on complex Electrical and Control Systems within a highly regulated nuclear environment. This role is ideal for professionals with extensive site-based commissioning experience and a strong understanding of safety and compliance in a nuclear setting. What You'll Be Doing Lead a team of commissioning technicians delivering to national and project-specific standards Input into design, construction, and commissioning stages to ensure commissionability Develop and approve commissioning documentation (test plans, reports, records) Execute and verify commissioning tests in line with safety protocols and QA expectations Liaise with multidisciplinary teams including QA, Engineering, Construction, and Operations Plan daily commissioning activities, track progress, and manage execution risks Review vendor test documentation, witness FATs, and ensure data integrity Key Skills & Experience Extensive Electrical & Instrumentation / Control Systems commissioning background Experience working in nucle...