Data Centre Technician

About the role

JLL is hiring an on-site technician in Busan, Korea, to oversee the day-to-day management and control of plant, mechanical and electrical systems in a client's facility, including data centre infrastructure. The role supervises multi-skilled engineering operations teams made up of directly employed staff and appointed vendors, ensures compliance with client and JLL policies, and reports to the DC Site Lead.

Key responsibilities

• Ensure site operations, including incident escalation, in line with approved Client/JLL procedures.
• Supervise planned and reactive activities using the CMMS platform and check subcontractor work for completion.
• Implement safe systems on site and ensure staff and vendors follow client and JLL policies and procedures.
• Monitor and operate data centre systems: HVSB, transformers, LVSB, generators, fuel system, UPS, busway, PDUs, ATS, HVAC, chilled water, fan wall units, plumbing and drainage, fire detection and suppression, and BMS/CMS.
• Perform routine inspections, preventive maintenance and basic troubleshooting of mechanical and electrical systems, and respond promptly to alarms and emergencies.
• Carry out load calculations, capacity planning support, thermal assessments and performance data analysis.
• Maintain accurate logs, documentation and compliance records, and take part in site reviews covering maintenance standards, equipment replacement, security, change control, single points of failure, Tier adherence and operational risk.
• Coordinate periodic meetings with contractors, develop corrective action plans, attend training on equipment procedures and emergency procedures, and ensure compliance with fire, health and safety regulations and permit-to-work procedures.
• Perform additional tasks as required by the Site Lead.

Required profile

• Diploma or higher qualification in Electrical Engineering, Mechanical Engineering, Building Services, Computer Engineering or a related technical field.
• Minimum 3 years of hands-on experience in data centres, critical facilities or industrial plant operations.
• Ability to work independently and as part of a team in a high-pressure, 24/7 environment.

Required skills

• Computational work: interpreting technical schematics, basic engineering calculations and analysis of operational metrics.
• Hands-on knowledge of HV/LV electrical distribution, UPS, diesel generators, switchgear, chillers and precision cooling units.
• Following SOPs/EOPs and permit-to-work procedures, and basic documentation and reporting skills.