Chiller Technician Specialist

Job Type: Full-time|

Location:

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

I REN 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 Specialist is the most senior technical authority on shift for the central utility plant (CUP) at IREN’s liquid-cooled hyperscale campuses in West Texas and Oklahoma. This role owns the safe, reliable operation of the entire thermal chain – centrifugal and screw chillers, cooling towers, pumps, heat exchangers, CDUs, coolant distribution loops and the water treatment systems that keep them alive – supporting AI compute loads where a cooling excursion measured in minutes becomes a customer-impacting event.

Beyond hands-on maintenance and troubleshooting, the Chiller Specialist is the technical lead for the mechanical team, setting the technical standard for central utility plant (CUP) operations. This individual writes and validates Methods of Procedure, leads complex corrective work and vendor-supported overhauls, shares technical expertise with Chiller Technicians at every level and apprentices, and acts as the incident commander for thermal events.

This is a technical authority role rather than a people-management position – reporting to the Associate Director of Operations, it is a career destination for a technician who wants ownership of a world-class cooling plant rather than a truck and a service route.

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.

• 7+ years of hands‑on experience maintaining and troubleshooting large‑tonnage chiller plant, with at least 3 years in a mission‑critical environment such as a data center, hospital, semiconductor fab, pharmaceutical plant or heavy industrial facility
• EPA Section 608 Universal certification is required
• Demonstrable expertise across centrifugal and screw chillers from major OEMs (Trane, Carrier, York/Johnson Controls, Daikin) including refrigerant circuits, oil systems, starters and control sequences
• Direct experience with liquid cooling infrastructure – CDUs, direct‑to‑chip loops, secondary fluid systems or immersion cooling – or closely transferable precision process cooling experience, with the appetite to specialize
• Strong working knowledge of cooling towers, pumps, heat exchangers, VFDs, water treatment chemistry and hydronic system balancing
• Ability to read and interpret mechanical drawings, P&IDs, schematics and control sequences
• Proven experience authoring or peer‑reviewing Methods of Procedure and working under formal change management in a live critical environment
• Experience acting as a technical resource or informal mentor for less experienced technicians (formal supervisory experience is not required)
• Competence with BMS/EPMS platforms and CMMS record‑keeping
• High school diploma or equivalent required; trade school, apprenticeship completion, military technical training or an associate degree in HVAC, refrigeration or mechanical technology strongly preferred
• Additional credentials welcomed: journeyman or master HVAC license, Texas TDLR registration, boiler or stationary engineer license, NATE, RETA CRO/CIRO, or manufacturer‑specific chiller certifications
• 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…