Chiller Technician II

Job Type:  Full-time | Location:  Childress, TX | Department:  Operations | Reporting to:  Mechanical Manager | Work Location Type:  #onsite

IREN is a leading AI Cloud Service Provider, delivering large-scale GPU clusters for AI training and inference. IREN’s vertically integrated platform is underpinned by its expansive portfolio of grid-connected land and data centers in renewable-rich regions across the U.S. and Canada.

The Chiller Technician II independently operates and maintains the central utility plant (CUP) at IREN’s liquid-cooled hyperscale campuses in West Texas and Oklahoma. Working on shift as part of the mechanical team, this role keeps running the plant 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, high-accountability role for an experienced technician ready for full ownership of mission-critical central utility plant operations. Reporting to the Associate Director of Operations and working alongside Chiller Technician IIIs and the Chiller Specialist, the successful candidate will operate with a good degree of independence, provide on-shift guidance to Chiller Technician Is, and follow a clear progression path toward Chiller Technician III and Chiller Specialist as the portfolio grows.

With 100% renewable energy, we build, own and operate our data centers and take pride in being at the forefront of sustainable solutions for the ever-evolving applications of high-performance compute. We believe that human progress is invaluable, but it should be done in the right way – responsibly, sustainably and having a positive impact on the communities we operate in.

Responsibilities

• Central utility plant operation: Operate, monitor and maintain 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, working independently and guiding Chiller Technician Is as needed.
• Preventive maintenance execution: Carry out scheduled preventive maintenance on central utility plant equipment to the published program and quality standard, completing all documentation accurately and on time.
• Liquid cooling support: Maintain and support direct-to-chip and immersion cooling infrastructure including CDUs, manifolds, quick-disconnects, filtration and leak detection, escalating complex issues to a Chiller Technician III or the Chiller Specialist.
• Operational rounds and readings: Perform routine rounds, take operational readings across mechanical systems, and escalate abnormal trends, alarms or conditions promptly.
• Troubleshooting and corrective work: Diagnose and repair mechanical faults on chillers, pumps, towers and controls independently, escalating complex or high-risk issues to a Chiller Technician 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, 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: Escort and monitor 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 III and, ultimately, Chiller Specialist competency on liquid cooling and central utility plant operations, while providing on-shift guidance to Chiller Technician Is.

Requirements

• 3+ years of hands-on experience maintaining and troubleshooting commercial or industrial chillers and HVAC plant; mission-critical or industrial process cooling experience is strongly preferred
• EPA Section 608 Universal certification is required (Type II minimum considered with a commitment to obtain Universal)
• 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
• Additional credentials welcomed: HVAC journeyman licence, Texas TDLR registration, NATE, RETA, or manufacturer-specific chiller training
• 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
• A safety-first mindset, reliable attendance, and the discipline to follow written procedures precisely in a live critical environment

Benefits

At IREN, we offer a highly competitive compensation package that includes base salary, annual performance incentives, and opportunities to build long-term wealth through equity programs. These offerings are part of our broader total rewards package, thoughtfully designed to support your health, well-being, and long-term success.

Compensation

• Actual compensation will be determined based on factors such as experience, qualifications, and market data for the region.
• Total Compensation package may be inclusive of annual incentive bonus, equity (long-term incentive).

Health & Wellness

• 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

Retirement & Financial Wealth

• 401(k) retirement plan with company match
• Access to financial planning and legal services

Time Off & Leave Programs
Paid Time Off (PTO) and paid holidays

Growth & Development

• Internal skills training and advancement pathways
• Professional development to support certifications, continuing education, or role related training

Community & Culture

• Company events and team-building activities

We value diverse perspectives and believe that skills can be developed. If you’re passionate about this role, we want to hear from you — whether you meet every criteria or not. Your unique experiences might be exactly what we need!

IE US Operations Inc., the employing entity and proud member of the IREN group is an equal opportunity employer that is committed to creating an inclusive workplace. We are committed to evaluating qualified applicants and do not discriminate against protected characteristics under applicable legislation.

IE US Operations, Inc. “IREN” participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the United States.

By applying for this position and submitting your resume and application materials, you consent to the processing of your personal information in accordance with our Job Applicant Privacy Statement available on our website at www.iren.com.

Salary

Salary range: 42 - 47 USD (Hourly)