Data Centre Shift Mechanical Engineer - Liquid Cooling

Job Summary:

Datalec Precision Installations (DPI) is a leading provider of data centre design, supply, build, and managed services. We are committed to delivering seamless and integrated solutions for data centre operators worldwide. Our team is dedicated to maintaining high standards of service and excellence in every project we undertake.

We are seeking a Data Centre Shift Mechanical Engineer (Liquide Cooling Systems – CDU Secondary Side) to join our team. This role is responsible for the operation, maintenance, monitoring and incident response associated with the secondary side liquid cooling infrastructure supporting high\-density AI and HPC environments.

The role provides frontline engineering support for Coolant Distribution Units (CDUs), secondary distribution pipework, pumping systems, heat exchangers, control valves, filtration equipment, leak detection systems, instrumentation and associated mechanical assets supplying direct\-to\-chip liquid cooling technologies. The position is critical to maintaining cooling availability, protecting IT load and ensuring continuous operational resilience. This aligns with the secondary\-side infrastructure scope defined for liquid\-cooled data halls, including CDU secondary circuits, pumps, pipework, valves, heat exchangers, water quality monitoring, instrumentation, metering and leak detection systems.

Core Duties \& Responsibilities

· Monitor all secondary side cooling systems through BMS, DCIM and local control interfaces.

· Monitor system pressures, temperatures, flow rates and water quality parameters.

· Review alarms, trends and system performance data.

· Identify developing risks to cooling performance and initiate corrective actions.

· Ensure all liquid cooling systems operate within OEM and site operating parameters.

· Respond immediately to cooling\-related alarms and system faults.

· Investigate pump failures, control valve malfunctions, flow abnormalities and temperature deviations.

· Execute emergency operating procedures for loss of redundancy or cooling capacity.

· Support leak investigations and containment activities.

· Participate in critical incident bridge calls and escalation processes.

· Restore affected systems safely and efficiently following incidents.

· Priority response requirements may include risk to IT load, CDU failures, secondary water loss, major leak events and cooling redundancy failures

· Execute preventive maintenance schedules.

· Inspect and maintain:

· CDU secondary circuits

· Secondary pumps

· Heat exchangers

· Isolation valves

· Control valves and actuators

· Side\-stream filtration equipment

· Strainers and filters

· Expansion vessels

· Leak detection systems

· Pressure, temperature and flow instrumentation

· Replace consumables and perform mechanical servicing activities in accordance with approved maintenance procedures.

· The secondary\-side asset population includes CDU pumps, distribution pipework, manifolds, valves, filtration systems, sensors and monitoring equipment:

· Monitor water treatment programmes.

· Conduct routine sampling and testing.

· Record conductivity, chemical concentration and contamination levels.

· Support chemical dosing and corrective treatment activities.

· Ensure coolant quality remains within OEM operating tolerances.

· Complete shift logs and maintenance records.

· Produce detailed handover reports.

· Create permit\-to\-work documentation.

· Follow RAMS, MOPs, SOPs and EOPs.

· Support change management activities.

· Maintain compliance with health and safety policies.

· Escort and supervise vendors and OEM specialists.

· Assist with commissioning and recommissioning activities.

· Support warranty investigations.

· Participate in root cause analysis and defect elimination programmes.

· Represent the business, upholding our core values and behaviours with all internal and external customers, clients and third parties

· Maintain business and client confidentiality, adhering to applicable Data Protection regulations and Information Security Standards in line with company, and group policies and procedures.

Qualifications: Skills and Experience

· City \& Guilds / NVQ Level 3 Mechanical Engineering or equivalent.

· Completed apprenticeship in mechanical engineering, building services or critical environments.

· Water treatment or closed\-loop cooling system experience.

· Permit\-to\-Work and Safe Systems of Work knowledge.

· Full UK Driving Licence (where applicable).

· Mission\-critical facilities environments.

· Data centre critical cooling systems.

· Chilled water or closed\-loop hydronic systems.

· Pump and valve maintenance.

· Heat exchanger operation and maintenance.

· Water treatment management.

· Leak detection systems.

· Control valve and actuator diagnostics.

· BMS interaction and alarm management.

· Emergency response within operational facilities.

Values \& Behaviours:

DPI Values

Dedication Precision Integrity

Behaviours

· Inspiration \- Has a clear vision of where to go and the ability to articulate it. Empowers people to implement our vision and strategy. Great communicator who captures the imagination, generating trust and commitment.

· Team Spirit \- Thinks about "we" not "me"; we do this together. Brings purpose to the team to make it a cohesive unit. Knows when to seek help and when to give it. Prepared to take action to address issues for the good of the team and celebrate others' successes.

· Self\-Awareness \- Emotionally intelligent; has empathy for others and gets the best out of people by meeting them on their terms. Great at building rapport with colleagues and customers; knows that their behavior impacts on the performance of others and adapts approach to achieve the best results.

· Achievement \- Always striving to be the best and consistently delivers. High performer: bringing high energy, competence and making the right decisions to get things done.

· Tenacity \- Relentless in the pursuit of their goals. Excellent at solving problems and overcoming obstacles; seeing the challenges before others see them and taking action, to avoid them becoming problems. Sees setbacks as opportunities and becomes stronger in adversity.

· Influence \- Highly skilled at getting others committed to the goal. Confident, enthusiastic and encourages creativity. Understands the needs of stakeholders and as a result, engages them.

Our Vision

· To compete at the highest standards in data centre fit\-out, MEP construction and managed services throughout Europe and beyond.

Our Mission

· Continue to develop and deliver products and services unparalleled in terms of quality.

· Retain our clients, broaden our breadth of service identifying closely with their changing requirements.

· Execute a robust H\&S and Wellbeing strategy. Consider and implement wherever possible initiatives that relate to environmental improvements.

Our Strategy

· People \- Build an organisation capable of managing the business we will become. Recruit and retain and develop the best industry professionals. Health, Safety and Wellbeing remain paramount, for our employees and clients.

· Products \- must address an industry need. We must have differentiators such as assured quality, modularisation, and off\-site construction techniques. Datalec’s commitment to quality is unsurpassed in the industry, we seek perfection. New products and services must be delivered to the same exacting standards.

· Purpose \- relates both to our clients and our organisation. We need to understand both how to be able to confidently present our solutions and product strategy to the market. Separately, we create a working environment that promotes and rewards employees fairly, actively supporting a culture of transparency and mutual respect.

Benefits:

• Company events


• Life insurance


• Private medical insurance


• Referral programme

• GCSE or equivalent (preferred)

• Water treatment or closed loop\-cooling: 2 years (required)


• Permit to Work and Safe Systems of Work: 1 year (required)


• Mission critical facilities environments: 3 years (required)

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