Critical Facilities Technician

Daniel Owen Ltd; Greater London; On-site; GBP 45,000 - 65,000; Full time

Benefits offered by this job

Shift allowance for 24/7 operations

Annual bonus

Private medical insurance

Life assurance

Paid training for HV, UPS, and 2+ cert

Progression into Senior Technician, or

Job summary

Daniel Owen Ltd in London is seeking a Critical Facilities Technician to maintain essential data centre infrastructure. You will manage high‑availability ME systems including UPS, generators, switchgear and cooling units, ensuring uptime and safety compliance.

Ideal candidates have an electrical or mechanical engineering qualification, experience in critical environments, and the ability to read technical drawings and SOPs.

Qualifications

• Electrical or Mechanical Engineering qualification (NVQ Level 3+, City & Guilds, 18th Edition).
• Ability to read technical drawings and follow SOPs/EOPs.
• Strong understanding of UPS, generators, switch gear, and cooling systems.
• Experience in critical environments (data centres, hospitals, industrial plants).

Responsibilities

• Perform routine maintenance on electrical and mechanical systems.
• Monitor BMS systems and respond to alarms.
• Support load testing, switching operations, and emergency procedures.
• Maintain cooling systems including CRAC/CRAH units and chillers.
• Ensure compliance with safety regulations and operational standards.
• Work closely with engineering teams during upgrades and expansions.

Skills

Reading technical drawings

Follow SOPs/EOPs

HV switching experience

F‑Gas certification (desirable)

Education

Electrical or Mechanical Engineering qualification (NVQ Level 3+, City & Guilds, 18th Edition)

Tools

UPS

Generators

Switchgear

Cooling systems

Job description

Critical Facilities Technician | London | £45,000-£65,000

Critical Facilities Technicians ensure the mechanical and electrical systems powering the data centre run flawlessly.

You'll manage high‑availability infrastructure including UPS, generators, switch-gear, cooling systems, and fire suppression. This role is ideal for candidates with strong M& E backgrounds who want to work in a precision‑driven, mission‑critical environment.

Key Responsibilities

• Perform routine maintenance on electrical and mechanical systems
• Monitor BMS systems and respond to alarms
• Support load testing, switching operations, and emergency procedures
• Maintain cooling systems including CRAC/CRAH units and chillers
• Ensure compliance with safety regulations and operational standards
• Work closely with engineering teams during upgrades and expansions

Qualifications Required

• Electrical or Mechanical Engineering qualification (NVQ Level 3+, City & Guilds, 18th Edition)
• Strong understanding of UPS, generators, switch gear, and cooling systems
• Experience in critical environments (data centres, hospitals, industrial plants)
• Ability to read technical drawings and follow SOPs/EOPs
• Desirable: HV switching experience, F‑Gas certification

Benefits

• Shift allowance for 24/7 operations
• Annual bonus
• Private medical insurance
• Life assurance
• Paid training for HV, UPS, and specialist certifications
• Progression into Senior Technician, Supervisor, or Engineering Manager roles