Mobile HVAC Engineer – Data Centres

Mobile HVAC Engineer – Data Centres (Mission-Critical)

Location: M25 Corridor (with focus on the South of England) + International Travel

Employment Type: Full-time, Permanent

Job Purpose

Our client is a leading provider of data centre design, supply, build, and managed services, delivering integrated solutions to operators worldwide.

They are seeking an experienced Mobile HVAC Engineer to support mission-critical data centre environments. This role focuses on maintaining, troubleshooting, and optimising cooling systems that underpin 24/7 operations.

You will work on live environments where uptime, resilience, and compliance are critical, carrying out both planned and reactive maintenance on essential cooling infrastructure across multiple sites.

Duties & Responsibilities

• Carry out planned preventative maintenance (PPM) and reactive works on:
• Specialist liquid-to-chip cooling systems (OEM training provided)
• Air- and water-cooled chillers
• CRAC / CRAH units
• DX and chilled water systems
• Adiabatic and free-cooling solutions
• Diagnose and rectify faults on live, critical systems without disruption
• Maintain N+1 / 2N redundancy and support failover testing
• Interface with BMS / DCIM systems to monitor alarms, trends, and performance
• Support commissioning, system flushing, structured startup, and balancing
• Support upgrades and system optimisation projects
• Participate in a call-out rota supporting 24/7 operations
• Work safely under Permit to Work systems, including:
• RAMS
• Isolation and LOTO procedures
• Complete all service reports, compliance documentation, and fault logs accurately
• Ensure adherence to F-Gas regulations and HSE standards
• Maintain high housekeeping standards in critical environments
• Liaise professionally with:
• Data centre operations teams
• Facilities managers
• Client representatives and contractors
• Equipment manufacturers
• Internal delivery teams
• Communicate faults, risks, and remedial actions clearly and concisely

Essential Skills & Experience

• Relevant qualifications in Refrigeration & Air Conditioning (or equivalent)
• F-Gas Category I (essential)
• Strong electrical knowledge (controls, panels, motors, inverters)
• Experience in data centres or other mission-critical environments (e.g. hospitals, laboratories, critical manufacturing)
• Proven experience with chillers, CRAC/CRAH units, and redundant cooling systems
• Strong fault-finding ability under SLA and uptime pressure
• Full UK Driving Licence
• CSCS / ECS card (or willingness to obtain)

What’s on Offer

• Work on cutting-edge data centre infrastructure
• OEM training on specialist cooling technologies
• Exposure to high-profile, mission-critical environments
• Opportunities for international travel
• Long-term career development within a growing sector