Data Center HVAC/Mechanical Engineer

Datacenter HVAC/Mechanical Engineer – Data Center 

📍 Athens, Greece

We are looking for a Mechanical Engineer to join our Data Center Operations team in Athens and support the reliability, resilience, and efficiency of our mission-critical infrastructure.

The role combines HVAC and industrial cooling expertise with the broader responsibilities of a Data Center Site Engineer.

• →Operate, monitor, and maintain critical HVAC and cooling infrastructure, including chillers, pumps, CRAH/AHU units, dry coolers, heat exchangers and associated controls.
• →Troubleshoot mechanical and cooling system faults and support incident response and root-cause analysis.
• →Monitor plant performance through BMS and facility monitoring systems.
• →Support preventive and corrective maintenance, testing and operational activities.
• →Supervise contractors and ensure compliance with safety procedures, RAMS (Risk Assessment and Method Statement) and permit-to-work requirements.
• →Support emergency response scenarios including cooling failures, high-temperature conditions and water-related incidents.
• →Contribute to energy efficiency, cooling optimization and continuous improvement.

• Degree in Mechanical Engineering or related discipline.
• 3+ years' experience in HVAC, industrial cooling, building services, critical facilities or large-scale mechanical infrastructure.
• Good understanding of chilled-water systems, refrigeration, pumps, heat exchangers, air-handling equipment and HVAC controls.
• Strong troubleshooting and hands-on engineering skills.
• Experience in Data Centers, industrial facilities, utilities, pharmaceutical facilities or other critical environments is highly desirable.
• Strong safety mindset, communication skills and ability to work effectively in an operational environment.

If you have a passion for HVAC, industrial cooling and mission-critical engineering, we’d like to hear from you.

Responsibilities
The Data Center Engineer is responsible for supporting the safe execution of electrical and mechanical work within data centers, working under the guidance of engineers. They help administer and monitor safe systems of work, ensuring all activities comply with established safety rules and procedures. The role involves assisting in the training and assessment of staff and contractors, participating in audits, and contributing to the continuous improvement of safety practices. The engineer works closely with cross-functional teams to address operational challenges, resolve issues, and maintain a safe working environment. They are expected to demonstrate a commitment to company values, including customer focus, teamwork, and results-driven performance. The engineer also helps interpret and apply complex safety regulations, ensuring all work is performed to the highest standards. Effective communication and organizational skills are essential for success in this role.