Chiller Technician I

IREN•Childress, TX

8d•Onsite

About The Position

The Chiller Technician I helps keep the cooling running at IREN’s liquid-cooled hyperscale campuses in West Texas and Oklahoma. Working on shift as part of the mechanical team, this entry-level role supports the operation of the central utility plant (CUP) that removes heat from some of the densest AI compute in North America – centrifugal and screw chillers, cooling towers, pumps, heat exchangers, coolant distribution units and the direct-to-chip liquid cooling loops that serve the racks themselves. This is a hands-on, closely-supervised role for a technician who wants to move from commercial HVAC or industrial refrigeration – or straight from a trade program – into mission-critical central utility plant operations. Reporting to the Associate Director of Operations and working under the direct guidance of Chiller Technician IIs, IIIs and the Chiller Specialist, the successful candidate will be supported through structured training on liquid cooling systems and a clear progression path toward Chiller Technician II, Chiller Technician III and Chiller Specialist as the portfolio grows.

Requirements

1+ years of hands-on experience maintaining and troubleshooting commercial or industrial chillers and HVAC plant, or recent completion of an HVAC/refrigeration trade program, apprenticeship or military technical training; mission-critical or industrial process cooling exposure is a plus but not required
EPA Section 608 certification is required (Type II minimum, with a commitment to obtain Universal certification within the first year)
Basic working knowledge of chiller refrigerant circuits, cooling towers, pumps, heat exchangers, VFDs and hydronic systems
Ability to read and interpret mechanical drawings, schematics and basic control sequences
Willingness and aptitude to be trained on direct-to-chip and immersion liquid cooling systems – prior exposure is an advantage but not required
Familiarity with BMS or building automation front ends, and comfort using a CMMS for work order and record management
High school diploma or equivalent required; trade school, apprenticeship, military technical training or an associate degree in HVAC, refrigeration or mechanical technology preferred
Ability to work 12-hour rotating shifts including nights, weekends and holidays, and to participate in an on-call rotation
Physically able to climb ladders and stairs, work at height and in confined spaces, lift up to 50 pounds, and work in mechanical spaces and outdoor West Texas conditions
Valid driver’s license and willingness to travel between the Texas and Oklahoma campuses as required
Must live within, or be willing to relocate to, commutable distance of the assigned campus; relocation assistance is available

Nice To Haves

mission-critical or industrial process cooling exposure
prior exposure to direct-to-chip and immersion liquid cooling systems
Additional credentials welcomed: HVAC journeyman license, Texas TDLR registration, NATE, RETA, or manufacturer-specific chiller training

Responsibilities

Central utility plant operation (supervised): Assist with operating, monitoring and maintaining the central utility plant (CUP) – centrifugal, screw and air-cooled chillers, cooling towers, pumps, heat exchangers, dry coolers, valves and associated piping – on assigned shifts, under the direction of a Chiller Technician II, III or the Chiller Specialist.
Preventive maintenance execution: Carry out routine, scheduled preventive maintenance tasks on central utility plant equipment to the published programme and quality standard, under supervision, completing all documentation accurately and on time.
Liquid cooling support: Assist with maintaining direct-to-chip and immersion cooling infrastructure including CDUs, manifolds, quick-disconnects, filtration and leak detection, under the guidance of Chiller Technician IIs, IIIs and the Chiller Specialist.
Operational rounds and readings: Perform routine rounds, take operational readings across mechanical systems, and escalate abnormal trends, alarms or conditions promptly.
Basic troubleshooting: Assist in diagnosing straightforward mechanical faults on chillers, pumps, towers and controls under supervision, escalating all but the most routine issues to a Chiller Technician II or III, the Chiller Specialist or the Associate Director of Operations.
Water treatment support: Support condenser and technical cooling water treatment programmes through sampling, testing, dosing and record-keeping.
Incident response: Respond to thermal alarms and mechanical events on shift under the direction of a more senior technician, execute recovery steps per approved procedures, and contribute to post-incident reviews.
Procedure compliance: Execute all work on critical plant strictly in accordance with approved Methods of Procedure, SOPs and the change management process – no improvisation on live systems.
Safety: Follow lockout/tagout, confined space, hot work, arc flash and refrigerant handling requirements without exception, and raise safety concerns immediately.
Contractor escort and oversight: Assist with escorting and monitoring OEM and specialist contractors on site, verifying that work matches the approved scope and meets IREN safety expectations.
Documentation and CMMS: Keep work orders, asset histories, readings and refrigerant records accurate and current in the CMMS.
Continuous learning: Participate actively in the training and qualification programme, building toward Chiller Technician II, Chiller Technician III and, over time, Chiller Specialist competency on liquid cooling and central utility plant operations.

Benefits

Base salary
Annual performance incentives
Equity programs
100% company paid health insurance premiums (medical, dental, and vision) for employees
75% company paid coverage for dependents
Company-paid short-term and long-term disability insurance
Voluntary life, critical illness, and accident coverage available
Health Savings Accounts (HSA) – when combined with the High Deductible Health Plan
Employee Assistance Program and wellness resources
401(k) retirement plan with company match
Access to financial planning and legal services
Paid Time Off (PTO)
Paid holidays
Internal skills training and advancement pathways
Professional development to support certifications, continuing education, or role related training
Company events and team-building activities
Relocation assistance