Job Title: Mechanical / Design Engineer Location: Hybrid / Reading (UK-based nuclear projects) Contract Type: Contract (Inside IR35) Clearance: Must hold SC clearance or DV Clearance Sector: Nuclear We are recruiting on behalf of a confidential client delivering high-profile projects in the UK nuclear sector. We’re looking for experienced Mechanical and Design Engineers to support engineering activities across infrastructure, mechanical systems, decommissioning, and lifecycle facility design. This is a great opportunity for professionals with a strong background in regulated, high-hazard environments to contribute to nationally significant programmes. Role Overview: You’ll play a key part in developing and delivering compliant engineering solutions, with involvement across mechanical design, infrastructure layouts, decommissioning support, and asset integrity. The work will span concept through to detailed design, including documentation, analysis, and stakeholder engagement. Key Responsibilities: Develop detailed mechanical or infrastructure designs using CAD tools (e.g., AutoCAD, SolidWorks) Prepare and maintain technical specifications, design documents, and operational manuals Ensure all designs meet relevant nuclear safety, engineering, and legislative standards Carry out computer simulations, calculations, and FEA (where applicable) Liaise with internal teams, suppliers, and regulatory stakeh...