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