Can you lead mechanical building services design for one of the UK’s most critical defence infrastructure programmes? Do you have the technical depth to design HVAC and water systems for nuclear facilities—and the leadership to guide others through it? Are you a sole British national with the clearance eligibility to work on high-security MOD projects? The Opportunity A leading engineering consultancy is seeking both Senior and Principal Mechanical Engineers to join a long-term nuclear infrastructure programme supporting the Royal Navy. Based in Glasgow, this role is part of a major joint venture delivering specialist technical services under the NTSP framework. We would also welcome applications from these industries Defence, Oil & Gas, Pharmaceutical, Aerospace, and High-Security Government Infrastructure. This role would suit candidates working in these roles Senior Mechanical Engineer, Principal Mechanical Engineer, Building Services Engineer, HVAC Design Engineer, Mechanical Systems Engineer, Nuclear Facilities Engineer, Fire Protection Engineer, Drainage Design Engineer, Technical Lead Engineer, Infrastructure Design Engineer. Your duties and responsibilities will be Lead the design and delivery of mechanical building services including HVAC, water, drainage, and fire protection systems for nuclear facilities. Oversee technical documentation, calculations, schematics, and CAD/Revit modelling to ensure design int...