https://jobs.co.uk/job/principal-mechanical-engineer-rullion-engineering-cumbria--b0db8fa0-9daa-4488-8753-1b6ea64ef9eb RSS feed for Principal Mechanical Engineer at Rullion Engineering Cumbria. en-gb Thu, 09 Jul 2026 00:47:58 GMT https://jobs.co.uk/job/principal-mechanical-engineer-rullion-engineering-cumbria--b0db8fa0-9daa-4488-8753-1b6ea64ef9eb https://jobs.co.uk/job/principal-mechanical-engineer-rullion-engineering-cumbria--b0db8fa0-9daa-4488-8753-1b6ea64ef9eb Tue, 07 Jul 2026 23:00:00 GMT Location: Warrington | Salary: Negotiable | Type: Permanent | Position: Principal Mechanical Engineer Location: Warrington or Abingdon (flexible with location) Start Date: ASAP Hours: 37 hours per week, Monday - Friday Hybrid: 2 days in the office and 3 days home working Nuclear Projects The Principal Mechanical Engineer will work within multi-disciplinary engineering teams delivering projects across different lifecycle stages, from FEED through to detailed design, commissioning, and operational support within regulated nuclear environments. You will be involved in mechanical design and technical studies, supporting a range of systems including handling equipment, mechanical transfer systems, and process equipment used in high-active or controlled environments. Work will also include design development, technical documentation, and support across construction, commissioning, operations, and decommissioning phases. Key Responsibilities Deliver and manage mechanical engineering studies and design work Produce and review technical outputs such as calculations, specifications, flow diagrams, P&IDs, layouts, and substantiation notes Support design development from concept through to detailed design and commissioning Contribute to ... Permanent