High Voltage (HV) Maintenance Technician

Job Type: Full-Time | Location: Sweetwater, TX | Department: Construction | Reporting to: Site & Construction 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 High Voltage (HV) Maintenance Technician plays a critical role in powering mission-critical, next-generation data center infrastructure by ensuring the safe, reliable operation of high-voltage substations ranging from 13.8kV to 345kV. This hands-on position is responsible for maintaining and troubleshooting advanced HV systems—including transformers, switchgear, circuit breakers, protection and control systems, and SCADA—in a zero-downtime environment where precision and safety are paramount. Working closely with operations, engineering, and external partners, the technician serves as a trusted technical leader, executing complex switching and maintenance activities while upholding the highest standards of reliability, compliance, and operational excellence. 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. High school diploma or equivalent required; Technical degree, electrical apprenticeship, or equivalent military/utility experience preferred. Minimum 5 years of experience working with high-voltage power systems (13.8kV – 345kV) in data centers, substations, or utility environments preferred. Licensed Journeyman/Master Electrician, NETA certification, or equivalent HV qualification preferred. NFPA 70E, OSHA 30, or HV switching certification preferred. Demonstrated experience in substation operation, switching, and maintenance. Familiarity with protective relays, SCADA systems, and HV control schemes. Experience overseeing contractors and managing HV maintenance schedules. Strong knowledge of HV equipment operation, safety standards, and testing practices. Ability to read and interpret electrical one-lines, schematics, and relay coordination studies. Skilled in electrical troubleshooting, root cause analysis, and emergency response. Proficient with test equipment (primary/secondary injection kits, insulation testers, IR cameras, relay test sets). Strong communication and leadership skills to coordinate across multiple teams and vendors. Other Important Requirements: Pre-employment screening, including background check and substance testing may be required according to company policies. Must provide own steel-toed work boots; other PPE will be supplied. Must be able to reliably commute to the work site daily or have plans to relocate before starting work. Must be comfortable working a rotational schedule, which includes day and night shifts as well as weekend work, based on project needs. Employees working night shifts will receive a 15% premium added to their hourly rate only for hours worked during night shifts. Oversee and perform preventive, predictive, and corrective maintenance on HV equipment across substations. Conduct switching, isolation, and grounding procedures on HV equipment in compliance with company safety standards and NFPA 70E/OSHA regulations. Monitor and maintain HV transformers, circuit breakers, protective relays, battery banks, and associated control systems. Perform testing and inspections (e.g., insulation resistance, SF6 gas, oil sampling, DGA, breaker timing, thermography). Coordinate and oversee vendor services and contractors performing HV maintenance, testing, and repairs. Ensure substations are maintained in compliance with NERC, NEC, and local utility requirements. Support fault isolation, root cause analysis, and incident investigations related to HV events. Maintain accurate records of switching orders, maintenance logs, and substation condition reports in CMMS. Assist with capacity planning, load transfers, and electrical system upgrades in partnership with engineering teams. Provide HV safety training, mentoring, and procedural guidance to junior technicians and cross-functional staff. Participate in on-call rotation and respond to emergency power events impacting data center operations. 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 The expectedhourly rangefor this role start is $37.50/hour USD. Actual compensation will bedetermined based on factors such as experience, qualifications. Competitive wages with robust per diem and project allowance, when applicable 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 theHigh-DeductibleHealth Plan Employee Assistance Program and wellness resource Retirement & Financial Wealth 401(k) retirement plan with company match Paid professional development andaccesstofinancialplanning and legalservices Time Off & Leave Programs Paid Time Off (PTO) and paid holidays Growth & Development Professional development to support certifications, continuingeducation, 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.