Critical Mechanical Shift Engineer – £52,000 – Essex Location: Essex Salary: £52,000 Hours: Continental Shift Pattern (Days & Nights)

We are currently recruiting for an experienced Critical Shift Engineer (Mechanical Bias) to join a leading facilities management provider supporting a mission-critical data centre in Essex.

This is an outstanding opportunity to work within a high-availability, critical environment where uptime, resilience, and operational excellence are paramount. You’ll join a business that genuinely values its engineers — offering structured progression, continuous training, and strong leadership committed to long-term career development within the data centre sector.

Key Responsibilities: Carry out Planned Preventative Maintenance (PPM) and reactive maintenance across critical mechanical infrastructure. Respond rapidly to plant failures and critical alarms to ensure maximum uptime and resilience. Operate and maintain mechanical systems including CRAC/CRAH units, chillers, cooling towers, pumps, pressurisation units, expansion vessels, and associated pipework. Fault-find on chilled water systems, HVAC plant, UPS cooling systems, and water treatment equipment. Monitor and operate Building Management Systems (BMS) and DCIM systems (Head End experience advantageous). Support critical environment compliance, including permit to work system...