Senior Mechanical Engineer - Sellafield SRP Project (Contract)
Warrington | 3 Days On-Site (Hybrid) | National Infrastructure Project
£51-£56/hour (Umbrella) | Long-Term Contract
We're looking for a Senior Mechanical Engineer to support delivery on the Sellafield Product & Residue Store (SPRS) Retreatment Plant (SRP) - a key nuclear infrastructure programme handling Special Nuclear Materials (SNM) for safe long-term storage until 2120.
The project is in its execution phase, and this role is critical in ensuring mechanical design solutions are technically sound, compliant, and ready for installation, commissioning, and operation.

Role Overview

Lead the delivery of mechanical plant and equipment design, including glovebox systems and external support equipment
Produce and check specifications, drawings, assessments, and verification deliverables
Support resolution of manufacturing and testing queries, TQs, and concessions
Oversee design change implementation and ensure configuration control
Collaborate with CE&I engineers and multidisciplinary teams to ensure integrated solutions
Contribute to test documentation (works test, integrated test) and site installation planning
Mentor and guide junior designers and oversee document quality
Essential Skills & Experience

Advanced user of Autodesk Inventor and Vault Basic/Pro
Familiarity with GPS ISO (BS 8888) and plant layout/integration
Experience managing and directing design teams on mechanical plant and equipment
Understanding of installation, alignment, and works testing of complex systems
Strong record in resolving manufacturing issues and supporting document control
Desirable Experience

Experience with Sellafield Ltd engineering standards
Knowledge of glovebox containment design, safety case awareness
Working knowledge of CDM, PUWER, LOLER, and SoMSR compliance
Familiarity with nuclear design and integration principles
Contract Details

Rate: £51-£56/hour (via umbrella company)
Location: Hybrid - minimum 3 days/week on-site, up to 5 days depending on project needs
Additional: Site visits to supplier premises may be required
Security: Must hold or be eligible for SC clearance
Tools: Work to be completed on Sellafield-issued laptop at an approved location
Be part of a once-in-a-generation nuclear project securing materials into the next century.
Apply now or get in touch for more information