The Opportunity Amentum is the Design and Engineering partner for Sellafield under the PPP (Programme and Project Partners). This is a 20-year arrangement to deliver ~£7bn of major projects. We are looking to recruit high value expertise from across regulated and comparable sectors to work in a collaborative environment. PPP is delivering major projects, site wide improvements and provision of supporting services. The Project The Sellafield Product & Residue Store (SPRS) Retreatment Plant (SRP) Project will provide a facility that receives Special Nuclear Material (SNM) from existing stores across the Sellafield site and processes it into a form suitable for safe and secure storage until 2120. The Role We are currently recruiting a Senior Mechanical Designer to produce and update 3D models and mechanical design drawings including but not limited to GA’s, sub assemblies detail design drawings, layouts, MFDs etc. As A Senior Mechanical Designer, other responsibilities could include: * Providing support to resolution of testing Queries * Providing support to resolution of manufacturing Technical Queries/production permits/concessions * Provide design/detail design of machines, plant & equipment * Involvement in the production of O&M manuals * Involvement in the production of Design Risk assessment in accordance with BS EN 12100 As a Senior Mechanical Designer, you will already be: * Qualified to HNC Standard as a minimum in a relevant discipline, or equivalent experience and knowledge * Experienced in the use of Auto desk inventor * Experienced in the use of Auto desk vault Basis or Vault Pro (file management). * Have working knowledge of the BS 8888, BS EN ISO 8015, BS EN ISO 1101 & BS EN ISO 5459 * Have knowledge of key legislation CDM, SoMSR, PUWER & LOLER