L J B MANAGEMENT & RECRUITMENT SERVICES LIMITED
Mechanical Commissioning Lead
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MECHANICAL 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 L1L5 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.
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Experience Required
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- 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 L1L5 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.
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