Job Title: Contract Senior/Principal Mechanical Engineer Location: Warrington Contract Type: Initial 6-month contract, with strong potential for long-term extension Client: Confidential (Engineering Consultancy - Nuclear Sector) Rate: £50-£55 per hour (Inside IR35) About the Client: Our client is a respected engineering and project management consultancy operating within the nuclear and complex industrial sectors. They are known for delivering high-integrity solutions and maintaining a strong commitment to safety, innovation, and technical excellence across all phases of design, construction, and operations. Role Summary: We are recruiting for a Senior Mechanical Engineer to support the delivery of technically demanding engineering projects. This contract role offers the opportunity to lead mechanical design activities, perform detailed analysis, and contribute to multidisciplinary teams in a regulated environment. The position is expected to evolve into a long-term engagement based on performance and project continuity. Key Responsibilities: Lead mechanical design and development from concept through to detailed engineering and delivery Produce and review technical documentation including specifications, calculations, and engineering drawings Conduct mechanical analysis including stress, thermal, and fluid flow assessments Collaborate with multidisciplinary teams to integrate mechanical systems into broader project de...