MECHANICAL COMMISSIONING MANAGER

Job DescriptionMECHANICAL COMMISSIONING MANAGER Location: London – Liverpool Street / Hybrid Salary: Up to £110,000 basic Bonus: 20% Benefits: Pension, Healthcare, Travel & Company Benefits Travel: International travel required – no fixed rotation Sector: Data Centres / Mission Critical We are currently recruiting for a Commissioning Manager – Mechanical Bias to join a major Data Centre Developer / Operator within its Global Technical Operations team. This is a central, multi-site commissioning position supporting data centre projects from design and pre-construction through construction, commissioning, handover and live operations. The role will have responsibility for commissioning strategy, technical governance, programme delivery, design assurance, contractor/vendor management, testing, acceptance and operational readiness across a growing data centre portfolio. THE ROLE * Lead commissioning strategy, standards and governance across multiple data centre projects. * Manage integrated commissioning programmes from design review through to handover. * Provide technical oversight across mechanical building services and critical infrastructure. * Lead commissioning input during pre-construction, tender and design stages. * Review designs from a commissionability, maintainability and operational-readiness perspective. * Manage and coordinate CxA, commissioning contractors, vendors and specialist commissioning teams. * Lead and witness FAT, SAT and IST activities. * Oversee L1–L5 commissioning and L6 checklists. * Manage commissioning documentation, test scripts, test records and commissioning dossiers. * Drive defect, snag and punch-list close-out through to client acceptance. * Work closely with Construction, Design, Project Management, Commercial and Operations teams. * Support live data centre commissioning and asset lifecycle works. * Ensure operational readiness, O&M documentation and training requirements are completed. * Drive continuous improvement, lessons learned and standardisation of commissioning processes. * Provide technical input into resilience, availability and fault-tolerance initiatives. EXPERIENCE REQUIRED We are looking for someone with: * Significant Data Centre Commissioning experience. * Strong Mechanical Building Services / MEP background. * Experience across Colocation and Hyperscale Data Centres. * Strong knowledge of commissioning processes from pre-construction through handover. * Proven L1–L5 Commissioning / L6 experience. * Strong FAT, SAT and IST experience. * Experience managing CxA, contractors and vendors. * Experience reviewing data centre designs from a commissionability perspective. * Strong understanding of ASHRAE and relevant international design standards. * Experience with BMS / Controls and critical mechanical systems. * Experience with commissioning programmes, ITPs, test documentation and handover. * Experience working within a matrix organisation. * Strong stakeholder management and communication skills. * Willingness to undertake international travel. * Full driving licence