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Recently postedTemporary/CasualEngineering

Mechanical Commissioning Engineer

JAM Recruitment LtdSouth East London, London🇬🇧United Kingdom

Quick overview

SeniorityMid Senior
Employment typeTemporary/Casual
Work modeHybrid
LocationSouth East London, London, United Kingdom
HVAC

Job description

Mechanical Commissioning Engineer 12 Months Outside IR35 - £600 per day London and South Wales - Site Based Data Centres / Mission-Critical Infrastructure
PROJECT OVERVIEW
RESPONSIBILITIES

  • Lead mechanical commissioning activities across data centre developments.

  • Oversee commissioning of chilled water systems, chillers, CRAH/CRAC units, AHUs, pumps and associated HVAC equipment.

  • Coordinate pre-commissioning inspections, pressure testing, flushing and system balancing.

  • Manage functional performance testing of critical cooling infrastructure.

  • Support Integrated Systems Testing (IST), including cooling failure simulations, redundancy testing and recovery procedures.

  • Coordinate mechanical subcontractors, specialist vendors and commissioning teams.

  • Review mechanical drawings, P&IDs, commissioning procedures and technical documentation.

  • Monitor commissioning progress against programme milestones.

  • Identify and resolve commissioning defects and outstanding works.

  • Coordinate with electrical commissioning teams to ensure integration of mechanical and electrical systems.

  • Prepare commissioning reports, test records and handover documentation.


SKILLS / REQUIREMENTS

  • Proven mechanical commissioning experience within data centres or mission-critical environments.

  • Strong technical knowledge of chilled water systems, HVAC plant and critical cooling infrastructure.

  • Experience commissioning CRAH/CRAC units, AHUs, chillers and pumps.

  • Understanding of data centre redundancy and cooling resilience.

  • Experience managing subcontractors and specialist equipment vendors.

  • Familiarity with FAT, SAT, functional performance testing and IST.

  • Ability to interpret mechanical drawings, P&IDs and technical specifications.

  • Strong commissioning documentation and handover experience.


CERTIFICATIONS

  • HNC/HND or degree in Mechanical Engineering, Building Services or equivalent experience.

  • CSCS card.

  • SMSTS or SSSTS desirable.

  • Relevant site safety qualifications.


DESIRABLE

  • Hyperscale data centre commissioning experience.

  • Experience working on live mission-critical facilities.

  • Familiarity with commissioning management platforms such as CxAlloy.

  • Experience with high-density or liquid cooling systems.

  • Knowledge of BMS integration and mechanical control strategies.

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