Data Center Operations Technician

About Nebius: 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. Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI. Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R&D. The role 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 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. 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. 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)