Mechanical Systems Lead

Job Type: Full-Time | Location: Sweetwater, TX | Department: Operations | Reporting to : Site & Construction Manager | Work Location Type: #onsite IREN is a vertically integrated AI Cloud provider, delivering large-scale data centers and GPU clusters for AI training and inference. IREN’s platform is underpinned by its expansive portfolio of grid-connected land and power in renewable-rich regions across North America, Europe and APAC. As a Mechanical Lead you will support the team responsible for operating and maintaining the Central Utility Plant (CUP) and critical cooling infrastructure serving both liquid-cooled and air-cooled data halls. You will monitor plant and building automation systems, complete operating rounds, respond to alarms, and coordinate with senior engineers and vendors to protect uptime, safety, and efficiency. 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. Licensed/certified stationary or operating engineer credential (or equivalent) required; ability to maintain standing and meet site/authority requirements. 3rd Class Power Engineer certificate preferred. 5+ years of experience operating and maintaining industrial or mission-critical utility systems (central utility plants, data centers, hospitals, heavy industrial, oil & gas processing, etc.), including demonstrated experience leading work on shift and coordinating resources during abnormal conditions. Central utility plant operations (chillers, condenser water systems, hydronic/glycol loops, pumps, heat exchangers, VFDs) Experience supporting liquid-cooled HPC or data center infrastructure — CDUs, manifolds, pumps, filtration, and leak detection Proficiency with BMS, SCADA, and/or PLC systems for equipment monitoring, trending, and setpoint adjustments Demonstrated ability to perform thermal risk analysis, capacity modeling, and energy efficiency optimization Strong troubleshooting skills — able to diagnose root cause and execute corrective actions in a live, high-uptime environment Experience executing and managing preventative maintenance programs including contractor coordination and return-to-service documentation Familiarity with water treatment and chemistry programs for condenser water, glycol/hydronic loops, and liquid-cooling systems Ability to exercise independent judgment in adjusting plant operating strategies and equipment sequencing under changing load conditions Experience with reliability metrics and KPI reporting — uptime, energy efficiency (PUE/WUE), and maintenance backlog management Comfortable collaborating with Engineering, IT, and Leadership on capacity planning, infrastructure upgrades, and expansion projects Strong written and verbal communication skills — able to document operational trends, incidents, and improvement recommendations clearly At IREN, we offer a comprehensive, market-competitive total rewards package designed to support employees’ well-being, career advancement, and financial wealth. Our offerings reflect our commitment to Proceed with Purpose while rewarding high performance and long-term growth. Compensation Competitive wages based on experience starting at $36.75 / hour 15% night-shift premium for eligible roles, when applicable Overtime compensation for non-exempt workers for hours worked over 40 per week Relocation and Living-out-allowance (as applicable and based on successful candidate circumstances) 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 Paid professional development and access to financial planning and legal services Time Off & Leave Programs Paid Time Off (PTO) and paid holidays Growth & Development 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.