Data Center Site Engineer II — Mission-Critical Power & HVAC

Digital Realty; Greater London; On-site; GBP 45,000 - 65,000; Full time

Job summary

Digital Realty is seeking a Site Engineer II to support data centre infrastructure, performing maintenance, testing and surveillance of critical electrical and mechanical systems. The role includes on‑call duties, coordinating with subcontractors, and delivering SLA‑driven uptime.

You will lead Site Engineers I, develop procedures, and drive improvements in safety and reliability while maintaining client satisfaction in a demanding data centre environment.

Qualifications

• Experience in mission critical operations and maintenance of large scale electrotechnical and/or Electrical and Mechanical systems.
• HVAC Mechanical and/or Electrical.
• Proficiency in MS Office (Excel, Word, Outlook).
• Able to work in shifts.
• Technical education in a field related to mission critical operations.
• Experience with high/low voltage power distribution, chillers, pumps, and BMS systems.

Responsibilities

• Drive adherence to safety policies, operational efficiency, and core values.
• Ensure compliance with industry standards and legal requirements.
• Manage maintenance and repair operations, including coordination with subcontractors.
• Perform on-call duties and manage incidents as necessary.
• Document progress, issues, and results, and implement improvement measures.
• Provide supervision to Site Engineers I, including task assignment and performance evaluation.
• Demonstrate advanced proficiency in troubleshooting and maintenance tasks.
• Write and review operating procedures and plan critical maintenance/change requests.

Skills

Mission critical operations

HVAC systems

Electrical systems

BMS monitoring

Excel

Word

Outlook

Shift work

Communication

Attention to detail

Customer focus

Hands-on mentality

Stress resilience

Education

Vocational/technical education

Site engineering experience

Tools

Excel

Word

Outlook

Job description

Digital Realty is seeking a Site Engineer II to support data centre infrastructure, performing maintenance, testing and surveillance of critical electrical and mechanical systems. The role includes on‑call duties, coordinating with subcontractors, and delivering SLA‑driven uptime.

You will lead Site Engineers I, develop procedures, and drive improvements in safety and reliability while maintaining client satisfaction in a demanding data centre environment.