Journeyman HVAC Technician

Job Title: Journeyman HVAC Technician - Data Center Operations

What this job involves: As a Journeyman HVAC Technician at JLL, you will be responsible for maintaining the critical cooling infrastructure that protects sensitive IT equipment in data center environments. You'll work with precision cooling systems, chillers, computer room air handlers (CRAHs), and building automation systems to ensure optimal temperature and humidity control in mission-critical facilities. This role demands expertise in complex HVAC systems that operate continuously to support our clients' digital infrastructure.

Your day-to-day tasks will include:

Install, maintain, and repair precision cooling systems including CRAHs, computer room air conditioning (CRAC) units, and in-row cooling systems

Perform preventive maintenance on chillers, cooling towers, pumps, and heat exchangers to ensure peak performance

Monitor and adjust building automation systems (BAS) to optimize cooling efficiency and maintain environmental setpoints

Troubleshoot HVAC system failures using diagnostic tools and thermal imaging equipment to minimize downtime

Execute planned maintenance activities during scheduled windows while maintaining critical cooling redundancy

Respond to emergency cooling system alarms and temperature excursions with immediate action

Collaborate with electrical and facilities teams to ensure proper integration of cooling and power systems

Maintain accurate records of all HVAC maintenance activities, system performance data, and environmental conditions

Support cooling system upgrades and capacity expansions to meet growing data center demands

Desired experience and technical skills:

Requirements:

Valid Journeyman HVAC license or equivalent certification in applicable jurisdiction

Minimum 5 years of commercial or industrial HVAC experience

Experience with precision cooling systems and computer room environmental controls

Knowledge of chiller systems, cooling towers, and hydronic distribution systems

Ability to read and interpret HVAC schematics, P&IDs, and technical documentation

Proficiency with refrigeration systems, including leak detection and refrigerant recovery

Strong troubleshooting skills using pressure gauges, temperature sensors, and diagnostic equipment

Physical ability to work in mechanical rooms, at heights, and lift up to 50 lbs

Availability for on-call emergency response and flexible scheduling

Preferred:

Data center or mission-critical facility experience

Experience with Liebert, Stulz, or similar precision cooling equipment

Knowledge of building automation systems (Trane, Johnson Controls, Schneider Electric)

EPA Universal Refrigerant Handling certification

Experience with variable frequency drives (VFDs) and energy management systems

Associate degree in HVAC Technology or Mechanical Engineering

Certified Energy Manager (CEM) or similar energy efficiency certification