Mechanical and Electrical Technician

Kent (Maidstone and Dartford)

CustodianDC is a growing provider of secure, resilient colocation and critical data centre services, supporting customers across the UK and internationally.

This is an exciting opportunity for a Mechanical and Electrical Technician to work in a mission-critical environment where you'll help maintain the electrical and mechanical infrastructure that keeps our data centres operating safely, efficiently and around the clock.

Working across our Maidstone and Dartford sites under our Senior Facilities Manager and Technical Director, you'll carry out planned and reactive maintenance on critical electrical and mechanical infrastructure, ensuring maximum uptime and reliability within a high-availability environment.

Key Responsibilities: 

• Respond to reactive breakdown calls within agreed SLA timescales, minimising any risk to uptime.
• Maintain, fault-find, and repair modular UPS systems, diagnosing power quality issues across critical power infrastructure – escalate any concerns or issues to the Senior Facilities Manager.
• Carry out risk-focused planned maintenance on critical M&E plant, including generators, switchgear, water treatment plant and distribution systems – escalate any concerns or issues to the Senior Facilities Manager.
• Monitor and maintain N+1/redundant systems to protect data hall availability.
• Act as first responder for emergencies within the data centre, escalating urgent issues in line with critical incident procedures.
• Manage reactive Helpdesk tickets and keep all maintenance documentation and logs current and audit ready.
• Carry out site surveys and prepare method statements and risk assessments for works in live environments.
• Install and upgrade plant equipment, working confidently from technical and schematic drawings.
• Monitor environmental conditions (temperature, humidity) and equipment loading across the data hall and plant rooms.
• Follow strict change control, financial, and health and safety processes at all times.
• Write up incident reports and root cause analyses following any system outages, supporting continuous improvement – escalate any concerns or issues to the Senior Facilities Manager.

What We're Looking For

Essential:

• 18th Edition Wiring Regulations qualification.
• Experience working within a data centre, critical environment or other high-availability facility.

Desirable:

• Working knowledge of BMS, HVAC systems, chilled water circuits, CRAC / CRAH units, and chilled beams.
• A good grasp of mechanical building services, alongside your electrical expertise.
• Understanding of CDM regulations and H&S procedures (COSHH, risk assessments, etc.).
• IOSH or NEBOSH qualification.
• Experience testing and inspecting electrical systems.
• Confidence with emergency response and critical incident protocols.
• Authorised Person status (e.g. AP15/AP12).
• Awareness of water hygiene requirements (L8).
• Great communication skills and a customer-focused approach, comfortable liaising with clients on site.

Why Join Us:

• Work within a critical, high-profile data centre environment with real career development potential.
• Be part of a supportive, professional experienced engineering team.
• Competitive salary and benefits package including Private Healthcare and Medicash.
• Training opportunities to build your critical facilities expertise.