Data Center Operations Technician

Nebius B.V.; Mäntsälä; On-site; EUR 42,000 - 58,000; Full time

Job summary

Nebuíus B.V. seeks a Mechanical Operations Technician to ensure safe, reliable operation of critical data center mechanical systems in Mäntsälä, Finland. You will monitor, inspect, maintain, and repair HVAC, chilled water, pumps, and distribution equipment as part of a 24/7 team.

You will work with BMS and CMMS tools, follow SOPs, and participate in commissioning, testing, and incident investigations to keep equipment available and energy-efficient.

Qualifications

• 2–5 years of experience maintaining mechanical systems in data centers or critical environments.
• Experience with Building Management Systems (BMS) and CMMS software preferred.
• Bachelor's or vocational qualification in mechanical engineering or related discipline required.

Responsibilities

• Operate and monitor mechanical infrastructure using the Building Management System (BMS) and routine field inspections.
• Respond to alarms, equipment faults, and operational events following SOPs and EOPs.
• Record equipment readings, operating parameters, and shift activities in CMMS.
• Support planned switching operations and maintenance windows.
• Perform preventive, predictive, and corrective maintenance on mechanical equipment.

Skills

HVAC systems

CMMS software

BMS monitoring

Maintenance troubleshooting

Reading P&IDs

Safety awareness

English proficiency

Education

Vocational Qualification or Bachelor's in Mechanical Engineering

Tools

BMS

CMMS

P&IDs

Job description

The Mechanical Operations Technician is responsible for the safe, reliable, and efficient operation, inspection, maintenance, and repair of mechanical systems supporting a mission-critical data center in Mantsala, Finland. Working as part of a 24/7 Critical Facilities Operations team, the technician ensures maximum equipment availability while supporting the site's commitments to energy efficiency, sustainability, and operational excellence.

Key Responsibilities

Critical Facilities Operations

• Operate and monitor mechanical infrastructure using the Building Management System (BMS) and routine field inspections.
• Respond to alarms, equipment faults, and operational events in accordance with Standard Operating Procedures (SOPs) and Emergency Operating Procedures (EOPs).
• Record equipment readings, operating parameters, and shift activities.
• Support planned switching operations and maintenance windows.

Mechanical Maintenance

• Perform preventive, predictive, and corrective maintenance on mechanical equipment.
• Troubleshoot mechanical failures and carry out repairs or coordinate vendor support.
• Assist with commissioning, recommissioning, and integrated systems testing.
• Maintain accurate maintenance records using the Computerized Maintenance Management System (CMMS).

Mechanical Systems

• Chilled water systems CRAH and CRAC units
• Chillers
• Air Handling Units (AHUs)
• Pumps and hydronic distribution systems
• Heat exchangers
• HVAC systems
• District cooling and heat recovery systems (where applicable)
• Water treatment systems
• Mechanical valves and piping
• Expansion vessels and pressure systems

Health, Safety & Compliance

• Work in accordance with Finnish occupational safety legislation and EU health and safety requirements.
• Follow Permit to Work (PTW), Lockout/Tagout (LOTO), and risk assessment procedures.
• Use appropriate Personal Protective Equipment (PPE).
• Participate in emergency response activities and incident investigations.
• Promote a strong safety culture and environmentally responsible work practices.

Qualifications

Education

• Vocational Qualification (Ammatillinen perustutkinto) or Bachelor's degree in Mechanical Engineering, HVAC, Building Services Engineering, Industrial Maintenance, or a related technical discipline.
• Equivalent technical or military experience may also be considered.

Experience

• 2–5 years of experience maintaining mechanical systems in data centers, industrial facilities, manufacturing, hospitals, power generation, or other critical environments.
• Experience with Building Management Systems (BMS) and CMMS software is preferred.
• 2–5 years of experience maintaining mechanical systems in data centers or critical environments, Knowledge of Building Management Systems (BMS) and CMMS software is preferred, Vocational Qualification (Ammatillinen perustutkinto) or Bachelor's degree in Mechanical Engineering, HVAC, Building Services Engineering, Industrial Maintenance or related technical discipline.

Technical Skills

• HVAC and cooling systems
• Chilled water and hydronic systems
• Pumps, motors, and heat exchangers
• Mechanical fault diagnosis
• Building Management Systems (BMS)
• Computerized Maintenance Management Systems (CMMS)
• Mechanical drawings and Piping & Instrumentation Diagrams (P&IDs)
• Energy-efficient building systems

Preferred Qualifications

• Occupational Safety Card (Työturvallisuuskortti)
• Hot Work Card (Tulityökortti)
• First Aid Certificate (EA1 or equivalent)
• Refrigerant handling qualification (where applicable)
• Fluent English (written and spoken)
• Finnish language skills are beneficial but not essential