High Voltage (HV) Construction Supervisor

Job Type: Full-Time |
Location: Sweetwater, TX |
Department: Construction |
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.

The High Voltage (HV) Construction Supervisor is a critical leadership role responsible for protecting and delivering power to some of the most advanced, mission-critical data center infrastructure in the industry. In this role, you will serve as the site authority for high-voltage systems, leading technicians and contractors through complex switching, maintenance, and outage activities that directly support 24/7 operations. You will work at the center of power reliability—partnering with Operations, Engineering, and utility providers to ensure safe, uninterrupted energy delivery while supporting system expansions and next-generation infrastructure growth.

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.
• Minimum 7 years of experience working with high-voltage systems (13.8kV–345kV) in substations, utilities, industrial facilities, or data center environments.
• Minimum 2 years of experience in a lead or supervisory role (Supervisor, Foreman, Lead Technician, or equivalent) overseeing HV electrical work execution.
• Journeyman or Master Electrician license, or Journeyman Lineman license.
• Authorized/qualified for high-voltage switching.
• NETA certification or equivalent HV testing experience.
• NFPA 70E and OSHA 30 certification.
• Expert knowledge of HV switching procedures and substation safety practices.
• Strong technical understanding of power transformers, circuit breakers, protective relays, battery and DC control systems, Substation control schemes.
• Ability to read and interpret one-lines diagrams, schematics, wiring diagrams, relay logic, and coordination studies.
• Working knowledge of HV testing and diagnostics, including: DGA / oil analysis, insulation resistance testing, breaker timing, infrared thermography, SF6 handling and testing.
• Strong leadership presence with effective communication and contractor coordination skills.
• Proven ability to make sound decisions during outages, abnormal operating conditions, and emergency response events.
• Proficient with QA/QC systems, PtW and Switching Instruction documentation, and reporting standards.

• High school diploma or equivalent required.
• Minimum 7 years of experience working with high-voltage systems (13.8kV–345kV) in substations, utilities, industrial facilities, or data center environments.
• Minimum 2 years of experience in a lead or supervisory role (Supervisor, Foreman, Lead Technician, or equivalent) overseeing HV electrical work execution.
• Journeyman or Master Electrician license, or Journeyman Lineman license.
• Authorized/qualified for high-voltage switching.
• NETA certification or equivalent HV testing experience.
• NFPA 70E and OSHA 30 certification.
• Expert knowledge of HV switching procedures and substation safety practices.
• Strong technical understanding of power transformers, circuit breakers, protective relays, battery and DC control systems, Substation control schemes.
• Ability to read and interpret one-lines diagrams, schematics, wiring diagrams, relay logic, and coordination studies.
• Working knowledge of HV testing and diagnostics, including: DGA / oil analysis, insulation resistance testing, breaker timing, infrared thermography, SF6 handling and testing.
• Strong leadership presence with effective communication and contractor coordination skills.
• Proven ability to make sound decisions during outages, abnormal operating conditions, and emergency response…