Chiller Technician - JLL : Job Details

Job Title: Chiller Technician - Data Center Operations

What this job involves: As a Chiller Technician at JLL, you will specialize in the operation, maintenance, and repair of critical chiller systems that provide essential cooling for data center facilities. You'll work with large-capacity centrifugal, screw, and scroll chillers, along with associated cooling towers, pumps, and heat rejection systems that are vital to maintaining optimal operating conditions for mission-critical IT infrastructure. This specialized role requires deep expertise in refrigeration systems and the ability to ensure continuous cooling operations in a 24/7 environment.

Your day-to-day tasks will include:

• Operate, maintain, and repair centrifugal, screw, and scroll chillers ranging from 100 to 2000+ tons capacity

• Perform comprehensive preventive maintenance on chiller systems including compressor inspections, oil analysis, and refrigerant management

• Monitor and optimize chilled water systems, cooling towers, condenser water pumps, and variable frequency drives (VFDs)

• Troubleshoot complex chiller malfunctions using advanced diagnostic tools, vibration analysis, and thermal monitoring equipment

• Execute planned maintenance shutdowns while coordinating with operations team to maintain cooling redundancy

• Respond to critical chiller alarms and emergency cooling system failures with immediate technical expertise

• Maintain accurate logs of chiller performance data, energy consumption, and maintenance activities

• Support chiller retrofits, upgrades, and efficiency improvement projects

• Ensure compliance with refrigerant regulations, environmental standards, and safety protocols

Desired experience and technical skills:

Requirements:

• Minimum 5 years of experience with commercial/industrial chiller systems

• EPA Universal Refrigerant Handling certification (Type I, II, III, and Universal)

• Experience with centrifugal and screw chiller technologies from major manufacturers

• Knowledge of chilled water systems, cooling towers, and hydronic distribution networks

• Ability to read and interpret chiller schematics, control sequences, and technical manuals

• Proficiency with refrigerant leak detection, recovery, and system charging procedures

• Strong mechanical and electrical troubleshooting skills for complex refrigeration systems

• Physical ability to work in mechanical rooms, confined spaces, and lift up to 50 lbs

• Availability for on-call emergency response and rotating shift coverage

Preferred:

• Data center or mission-critical facility experience

• Experience with Carrier, Trane, York, or Daikin chiller systems

• Knowledge of building automation systems and chiller plant optimization

• Certified Chiller Technician (CCT) or similar industry certification

• Experience with magnetic bearing centrifugal chillers and advanced control systems

• Associate degree in HVAC, Mechanical Engineering, or Refrigeration Technology

• Energy efficiency certification (CEM, CDSM, or equivalent)