Senior Mechanical Design Engineer - Mission Critical ConsultancyHybrid - Gatwick HQWe''re hiring experienced Mechanical Engineers to join a leading consultancy delivering cutting-edge data centre solutions.You''ll take ownership of mechanical systems from concept to commissioning, producing robust designs and specifications for high-performance environments.Key responsibilities:Lead mechanical design across chilled water, LTHW, DX, and condensate systemsSpecify AHUs, chillers, dry coolers, and other HVAC plantDesign pressure venting, gas extract, and general ventilation systemsDeliver consultancy across feasibility, strategic planning, traditional MEP design, commissioning and complianceWhat we''re looking for:Strong background in mechanical building servicesProven experience in critical environments (data centres preferred)Detail-focused, driven, and capable of delivering end-to-end projectsAn excellent opportunity to work on large-scale, technically complex projects in one of the most fast-evolving sectors.