CS&A Principal Engineer

You lead and support a multi-discipline JV design and site engineering team on nuclear projects. You’ll engage with on-site and office-based teams to review design submissions, coordinate safety case-related activities, and ensure alignment with standards. The role combines technical leadership with on-site presence to drive delivery and risk management. This is a chance to influence major nuclear builds and decommissioning work within a safety-critical environment.

• Report to CSA RE daily and provide leadership to the JV CSA design and site engineering team
• Attend the Warrington office at least 3 days per week and visit Sellafield regularly to engage with the JV construction team
• Review, comment on, and sign design submissions; process PMACD submissions
• Review and determine acceptance of TQ/PP submissions
• Monitor progress of structural detail drawings, calculations, and documentation through to As Built status
• Demonstrate understanding of service supports, blockwork substantiation, and fire strategy concepts (preferred)
• Interface with the multi-discipline design team and liaise with SL Capability to resolve site issues
• Support Safety Case work including DJRs and external works design reviews
• Review external works interfaces with building envelope and drainage details
• Engage with construction teams on site and attend weekly risk reviews; participate in EWNs
• Visit site weekly and conduct/site walkdowns to address CS&A construction issues
• Liaise with SL Site Utilities and Infrastructure Capability to secure buy-in to contractor proposals

• Civil / Structural Engineering Degree, or equivalent
• Chartered Engineer (CEng) – MICE or MIStructE
• Demonstrable expertise in major project areas with proven specialist knowledge
• Ability to provide strategic guidance across a project portfolio
• Proven leadership capability within an engineering function
• Experience in the Nuclear Sector (new build and decommissioning)
• Strong understanding of design principles and ability to apply them
• Working knowledge of British Standards
• Excellent written and verbal communication skills
• Full UK driving licence (or equivalent permitting driving in the UK)
• Able to meet UK security clearance requirements

• leadership
• excellent communication
• stakeholder liaison
• Civil/Structural engineering
• British Standards knowledge
• Safety Case awareness