An Electrical Substation or Relay Repairer works at an electrical substation and operates equipment that controls the flow of electricity. Maintains and repairs relays or switches in a system that allows electricity from a power station to travel through the substation out to the distribution system and to customers.
US Operations | Reporting to: Operations Manager | W ork
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. 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. The High Voltage (HV) Electrical Maintenance Technician is responsible for the operation, maintenance, and reliability high-voltage substations supporting critical data center infrastructure. This role ensures uninterrupted power delivery through proactive maintenance, troubleshooting, and coordination of HV equipment including switchgear, transformers, protection systems, and circuit breakers. The technician will work closely with the operations manager and other critical facility teams to maintain safe, efficient, and reliable substation performance. We have grown substantially since 2019, from our inception in Australia to now having several facilities across North America and being listed on NASDAQ… and we are just getting started! By joining us, you will be contributing to the future of sustainable high-performance compute and the local communities we strive to have a positive impact on. High school diploma or equivalent (required). Technical degree, electrical apprenticeship, or equivalent military/utility experience (preferred). Licensed Journeyman/Master Electrician, NETA certification, or equivalent HV qualification (preferred).
NFPA 70E, OSHA
30, or HV switching certification (preferred). 5+ years of experience working with high-voltage power systems (13.8kV - 345kV), preferably in data centers, substations, or utility environments. 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. 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.
