Data Centre Engineer - Mechanical Bias (Days) (Hertfordshire)

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ROLE: Data Centre Engineer – Mechanical Bias
HOURS: Monday – Friday 08:00 – 17:00
LOCATION: JCA Data Centre Site – Waltham Cross

At Mitie, our people are our greatest strength, and our promise is to create a place to work where you can thrive and be your best every day. We’re looking for a Data Centre Engineer – Mechanical Bias to support the smooth, safe, and efficient operation of a high‑performance JCA data centre environment.

Role Responsibilities:

• Deliver planned preventative maintenance (PPM) and reactive maintenance across all mechanical systems within the data centre.
• Support the operation, monitoring, and troubleshooting of critical mechanical infrastructure, including CRAC units, HVAC systems, AHUs, pumps, and chilled water systems.
• Conduct mechanical fault‑finding, diagnostics, and repair work to maintain uptime and site resilience.
• Work closely with the engineering and on‑site facilities teams to ensure compliance with operational standards, SLAs, and safety regulations.
• Maintain accurate records, logs, and reports, ensuring documentation meets client and Mitie standards.
• Support in emergency response situations, including mechanical plant failures or environmental alarms.
• Carry out routine inspections and performance checks to ensure optimal plant operation.

Required Qualifications:

Applicants must meet the below defined requirements for the role.

• Recognised mechanical engineering qualification (C&G, NVQ, HNC or equivalent).
• Experience working within mission‑critical or data centre environments.
• Strong mechanical systems knowledge including chilled water, HVAC, and cooling plant.
• F‑Gas qualification (2079) – highly desirable.
• Chiller‑bias background or experience working on chilled water systems – highly favourable.
• Good understanding of health & safety procedures including risk assessments and safe systems of work.
• Ability to work independently and as part of a high‑performing engineering team.

What’s in it for you?

• Free on‑site breakfast and lunch provided daily.
• Access to Mitie’s industry‑leading training, development pathways, and career progression opportunities.
• Mitie employee benefits platform including discounts, cashback rewards, and wellbeing support.
• Pension scheme, holiday allowance, and life assurance.
• Opportunity to work in a state‑of‑the‑art data centre environment with cutting‑edge equipment.