Mechanical Data Center Operations Technician

About the Position

Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure.

We are currently seeking a Mechanical Data Center Operations Technician to ensure the safe, reliable, and efficient operation, inspection, maintenance, and repair of mechanical systems supporting our mission-critical data center in Lappeenranta, Finland.

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

Operate and maintain systems including:

• 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.

Requirements

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.

Technical Skills

Knowledge of:

• 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

Nice to Have

• 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

We Offer

• Competitive compensation
• Career growth and learning opportunities
• Flexibility and ownership
• Collaborative and innovative culture
• Opportunity to work on impactful AI projects
• International environment and talented teams

About the Company

Nebius is an equal opportunity employer. We are committed to fostering an inclusive and diverse workplace and to providing equal employment opportunities in all aspects of employment. We do not discriminate on the basis of race, color, religion, sex (including pregnancy), national origin, ancestry, age, disability, genetic information, marital status, veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable law.

Applicants must be authorized to work in the country in which they apply and will be required to provide proof of employment eligibility as a condition of hire.

If you need accommodations during the application process, please let us know.

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