Job Title: Senior Mechanical Design Engineer Location: Gateshead Salary: c.£70,000 plus car allowance Senior Mechanical Design Engineer An established UK‑based engineering and construction group, operating across complex technical and critical infrastructure environments, is seeking an experienced Senior Mechanical Design Engineer to support the delivery of high‑value, mission‑critical projects. The Role – Senior Mechanical Design Engineer As a Senior Mechanical Design Engineer, the role will involve: * Leading mechanical services design from concept through detailed design and commissioning * Developing and reviewing cooling systems, including chilled water, CRAH/CRAC, free cooling and adiabatic solutions * Producing design calculations, specifications, drawings and technical reports * Delivering mechanical solutions aligned with redundancy and uptime requirements * Coordinating with electrical, structural and architectural teams to ensure integrated design * Supporting site activities, commissioning, FAT/SAT testing and project handover * Engaging with clients and contributing to value engineering and risk mitigation About You – Senior Mechanical Design Engineer The successful Senior Mechanical Design Engineer will demonstrate: * A degree in Mechanical Engineering or equivalent * Extensive experience in mechanical services design within data centres or similarly critical environments * Strong knowledge of HVAC systems, thermal modelling and energy efficiency strategies * Familiarity with industry standards such as CIBSE, ASHRAE and BSRIA * Proficiency with AutoCAD and mechanical modelling software * Excellent communication skills and the ability to lead complex technical workstreams Why Apply? This Senior Mechanical Design Engineer opportunity offers exposure to technically challenging projects within a collaborative, forward‑thinking organisation that values quality, innovation and professional development. We’re committed to promoting inclusive opportunities. As a recruitment partner, we work with employers who value diversity and authenticity. If you’re excited about this Mechanical Design Engineer role but don’t meet every single requirement, we still encourage you to apply — your unique perspective could be exactly what they’re looking for