Data Center Cooling Engineer — Critical Facilities

Allscreens Nationwide Ltd; Dundee; On-site; GBP 55,000 - 75,000; Full time

Job summary

Allscreens Nationwide Ltd. in Scotland seeks a Mechanical / Cooling Engineer to own the data centre's critical cooling infrastructure, ensuring reliable thermal management for high-density GPU and IT loads.

You will oversee operation and maintenance of free-cooling, heat exchangers, pumps, glycol and water loops, RDHx, liquid-to-chip manifolds and backup chillers, monitoring performance and optimising efficiency to keep the facility within required environmental conditions and resilience.

Responsibilities

• Take ownership of the site's mechanical and cooling infrastructure, ensuring safe operation.
• Operate and maintain free-cooling systems, heat exchangers, pumps, glycol loops, RDHx and backup chillers.
• Maintain and support liquid-to-chip cooling systems and manifolds serving high-density GPU infrastructure.
• Monitor cooling performance, temperatures, pressures, flow rates and system alarms.
• Monitor PUE and cooling efficiency, identifying opportunities to optimise energy consumption and system performance.
• Optimise the use of the free-cooling loop to maximise efficiency and minimise reliance on mechanical cooling.
• Carry out planned preventative maintenance (PPM), inspections, testing and reactive repairs.
• Diagnose and respond to cooling system faults, leaks, temperature excursions and equipment failures.
• Monitor and maintain water quality, glycol concentration and water treatment systems.
• Manage the site's wet-well and water interface, ensuring appropriate operation and maintenance.
• Liaise with Scottish Water Horizons regarding water supply, cooling requirements, operational issues and planned works.
• Manage and coordinate specialist mechanical, HVAC and refrigeration contractors.
• Support the commissioning, testing and handover of new cooling infrastructure.
• Review method statements, risk assessments and permits associated with mechanical and cooling works.
• Maintain accurate maintenance records, asset registers, operating procedures and technical documentation.
• Support incident investigations and root-cause analysis following cooling failures or operational issues.
• Ensure all cooling equipment is operated and maintained in accordance with manufacturer requirements, statutory obligations and site procedures.
• Support the wider Critical Facilities team during major incidents, maintenance activities and emergency situations.
• Participate in an on-call rota for critical cooling incidents.
• Identify opportunities to improve cooling resilience, efficiency, capacity and reliability.

Job description

Allscreens Nationwide Ltd. in Scotland seeks a Mechanical / Cooling Engineer to own the data centre's critical cooling infrastructure, ensuring reliable thermal management for high-density GPU and IT loads.

You will oversee operation and maintenance of free-cooling, heat exchangers, pumps, glycol and water loops, RDHx, liquid-to-chip manifolds and backup chillers, monitoring performance and optimising efficiency to keep the facility within required environmental conditions and resilience.