Senior EC & I Engineer -Nuclear
Senior CE&I Engineer – Sellafield Projects
Contract | £51-£56/hour (Inside IR35)
Warrington | Hybrid – 3 days on site / 2 days remote
Are you a Senior Control, Electrical & Instrumentation Engineer looking to apply your expertise within one of the UK’s most complex nuclear environments? We are seeking a Senior CE&I Engineer to support a range of engineering and decommissioning projects across the Sellafield programme, delivering robust CE&I design and safety documentation within a highly regulated setting.
This role offers the opportunity to contribute to nationally significant nuclear decommissioning work, supporting the delivery of safety-critical systems that underpin long-term hazard reduction at Sellafield.
Key Responsibilities
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Deliver CE&I design work packages across a variety of nuclear engineering and decommissioning projects
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Produce and check design substantiation, safety documentation, and technical deliverables
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Provide expert CE&I input into design justification and safety case documentation
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Develop and review functional safety deliverables in line with IEC 61508 (up to SIL 1)
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Resolve complex technical issues using safe, compliant, and pragmatic engineering solutions
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Support installation, commissioning, and documentation activities where required
What We’re Looking For
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CEng or IEng preferred, or equivalent experience
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Strong background in CE&I design within nuclear or other highly regulated industries
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Demonstrated experience delivering fit-for-purpose engineering solutions to time and budget
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Solid understanding of functional safety, SIL-rated systems, and safety case development
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Ability to communicate complex technical issues and solutions clearly to stakeholders
Technical Knowledge & Standards
Experience or familiarity with:
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CE&I regulations and standards including CDM, PUWER, BS EN 13849 / 62061, BS 7671
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Industrial installation standards, UKCA / CE marking
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Engineering drawings, calculations, and design documentation
Desirable Skills
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Design risk assessments, installation method statements, and engineering output packs
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Panel build documentation, technical files, and O&M manuals
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Experience with PLC / SCADA control systems and industrial network architectures
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A pragmatic, risk-based engineering approach grounded in sound judgement
Why Join?
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£51-£56/hour (Inside IR35)
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Hybrid working model – 3 days in Warrington
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Opportunity to work across major Sellafield engineering and decommissioning programmes
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Technically challenging safety-critical work with genuine national importance
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Join a highly experienced and collaborative CE&I engineering team
Apply now to play a key role in delivering safe, effective engineering solutions across some of the UK’s most important nuclear projects.

