Mechanical Commissioning Engineer

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We are recruiting for a Mechanical Commissioning Engineer to join a specialist international sub-contractor on a high-profile data centre project in London. This is an excellent opportunity for an experienced engineer to take full ownership of commissioning activities from installation through to handover.
Key Responsibilities:
• Lead commissioning activities across all project phases, ensuring timely delivery and compliance with design
• Create, manage, and track test packs, commissioning plans, and technical documentation
• Oversee and witness Factory Acceptance Tests (FATs), Site Acceptance Tests (SATs), and internal snagging inspections
• Coordinate and participate in pre-commissioning and system walkdowns using P&IDs and schematics
• Manage the commissioning schedule in line with project deadlines, updating trackers and progress reports
• Work closely with vendors, subcontractors, and internal teams to resolve technical issues and close out snags
• Review and clarify technical queries with the design team and contribute to technical meetings
• Ensure all commissioning activities align with EHS, quality, and operational standards
• Support the production of O&M manuals and client handover documentation
• Provide guidance and mentoring to junior engineers on-site
Requirements:
• Degree in Mechanical or Building Services Engineering, or relevant trade qualification
• Minimum 4 years’ experience in mechanical contracting (data centres, industrial, pharma)
• Strong technical understanding of commissioning and mechanical systems
• Confident working with schematics, P&IDs, and quality standards
• Strong communication, organisation, and problem-solving skills
If you are interested in this role, please send over an updated C.V to (url removed)
Apply
Location:
London
Job Type:
FullTime
Category:
Commissioning Engineer, Engineer, Mechanical Commissioning, Engineering, Commissioning, Mechanical

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