Senior Mechanical Project Manager MEP Contracting / Building Services Data Centre Buckinghamshire A leading Tier 1 MEP contractor is seeking a highly experienced Senior Mechanical Project Manager to lead the delivery of a landmark 10MW data centre – the first of four planned on a newly established hyperscale campus. This is a rare opportunity to take ownership of a high-value, technically complex new-build project from pre-construction through to completion (Summer 2027). You’ll work closely with a well-established main contractor and one of the UK’s most respected end clients in the mission-critical space. Key Responsibilities: Lead the mechanical package from pre-construction through to commissioning and handover on a 10MW data centre project Manage and coordinate mechanical engineers, site managers, supervisors, and specialist subcontractors Act as the primary mechanical interface between the MEP contractor, main contractor, and client team Oversee programme delivery, commercial performance, health & safety, and quality standards for the mechanical scope Drive progress across design coordination, procurement, installation, testing, commissioning, and handover Ensure mechanical works are delivered in line with project specifications, budget, and programme Coordinate closely with electrical, CSA, and commissioning teams to ensure fully integrated building services deliveryRequirements: Proven experience as a Senior Mechanical Project Manager within a Tier 1 MEP contractor environment Strong background delivering complex mechanical building services on large-scale data centre or mission-critical projects Excellent understanding of mechanical systems including HVAC, chilled water systems, CRAH/CRAC units, DX systems, pipework, pumps, heat rejection, and BMS interfaces Ability to lead project teams and manage subcontractors in fast-paced, high-value construction environments Strong communication skills with the ability to engage confidently with clients, consultants, and senior stakeholders Commercially aware with experience managing budgets, variations, and final accounts