Mechanical Quality Control Engineer - London - 145433

Mechanical QA/QC Engineer – Data Centre Project, London Location: London Sector: Data Centre / Mission Critical Reporting to: QA/QC Manager / Mechanical Project Manager Role Overview We are seeking an experienced Mechanical QA/QC Engineer to join the project delivery team on a large-scale, fast-track data centre project in London. The Mechanical QA/QC Engineer will be responsible for ensuring that all mechanical installations are delivered in accordance with the approved drawings, specifications, technical submittals, project quality requirements and applicable standards. This is a hands-on, site-based position requiring close coordination with the Mechanical Project Manager, Construction Managers, subcontractors, QA/QC team and Commissioning team. The successful candidate will be expected to take a proactive approach to quality, inspecting works progressively during installation and driving a right-first-time approach, rather than identifying defects at the end of the construction process. Key Responsibilities

• Implement and maintain the project Mechanical QA/QC procedures and quality requirements.
• Review mechanical drawings, specifications, approved technical submittals, manufacturers' requirements and coordinated BIM information.
• Prepare, review and manage Inspection & Test Plans (ITPs), inspection check sheets and quality records.
• Carry out regular site inspections of mechanical installations and monitor subcontractor workmanship.
• Ensure installations are completed in accordance with approved construction information and project standards.
• Inspect mechanical systems including:
• • CHW and glycol systems
• • Pipework, valves, strainers and associated equipment
• • Pumps and pressurisation systems
• • CRAHs / CRACs
• • AHUs and ventilation systems
• • Ductwork
• • Drainage and condensate systems
• • Mechanical supports and secondary steel
• • Insulation and identification
• • BMS mechanical interfaces, sensors and controls
• • Mechanical penetrations and associated firestopping
• Ensure equipment is installed in accordance with manufacturers' requirements and approved details.
• Coordinate and witness required mechanical inspections and testing.
• Witness and record activities including pressure testing, flushing, cleaning, chemical treatment, water quality testing and system integrity testing.
• Ensure required inspections and test records are completed before works are covered, insulated or progressed to the next stage.
• Raise and manage NCRs, quality observations and defects, ensuring corrective actions are completed and formally closed.
• Drive progressive snagging and de-snagging of mechanical installations.
• Monitor recurring quality issues and work with subcontractors to prevent repeat defects.
• Maintain accurate QA/QC trackers covering inspections, testing, NCRs, snags and outstanding documentation.
• Ensure redline drawings and as-built information are progressively maintained and reflect the installed condition.
• Carry out system and area walkdowns with the project team, client, consultant and commissioning representatives.
• Coordinate closely with the Commissioning team to ensure mechanical systems are construction complete and commissioning-ready.
• Verify QA/QC prerequisites prior to L2/L3 commissioning, Functional Performance Testing (FPT) and Integrated Systems Testing (IST).
• Ensure outstanding quality issues are identified early and do not impact commissioning milestones.
• Support compilation and review of test packs, commissioning records, O&M documentation, certificates and final handover information.
• Monitor the protection and preservation of completed mechanical installations and equipment through to handover.
• Produce regular quality reports highlighting outstanding inspections, defects, NCRs, documentation and risks to the programme. Experience & Skills The successful candidate should have:
• Previous experience as a Mechanical QA/QC Engineer, Mechanical Engineer or Mechanical Supervisor on major construction projects.
• Previous data centre / mission-critical experience strongly preferred.
• Experience working for a General Contractor / Main Contractor or major MEP contractor.
• Strong understanding of mechanical building services and critical cooling systems.
• Good knowledge of pipework, HVAC, cooling plant and associated mechanical equipment.
• Experience preparing and managing ITPs, inspection records, test packs, NCRs and quality documentation.
• Experience with pressure testing, flushing, chemical treatment and mechanical system testing.
• Strong understanding of the relationship between construction completion, QA sign-off and commissioning readiness.
• Ability to read and understand mechanical drawings, schematics, specifications and BIM/coordinated drawings.
• Good understanding of applicable UK standards and mechanical installation requirements.
• Strong organisational and documentation skills.
• Ability to challenge subcontractors constructively and drive quality close-out.
• Strong communication skills and ability to work effectively with construction and commissioning teams.
• Ability to work within a high-pressure, fast-track project environment. Qualifications
• Mechanical Engineering / Building Services qualification preferred.
• Appropriate CSCS card.
• SMSTS / SSSTS advantageous.
• Relevant QA/QC qualifications advantageous.
• Data centre / mission-critical experience highly advantageous. Key Expectations The Mechanical QA/QC Engineer will be expected to ensure:
• Mechanical installations are inspected progressively, not only at completion.
• Works comply with approved drawings, specifications and project quality requirements.
• Inspection and testing documentation is completed contemporaneously with the works.
• Defects and NCRs are identified early and closed promptly.
• Subcontractors maintain the required workmanship standards.
• Testing and commissioning prerequisites are completed ahead of programme milestones.
• Mechanical systems are presented to the Commissioning team fully QA-complete and ready for testing.
• Snagging is progressively reduced rather than accumulated towards project completion.
• As-built and handover documentation accurately reflects the completed installation.
• Quality issues do not create avoidable delays to commissioning, FPT, IST or final handover. This is a hands-on, site-based position. The Mechanical QA/QC Engineer is expected to be regularly inspecting installations in the field, challenging poor workmanship and driving issues to closure. The role is not intended to be predominantly desk-based or limited to the administration of QA documentation.