High Voltage Maintenance Technician

IREN

8h•Onsite

About The Position

Reporting to the Site & Construction Manager the High Voltage (HV) Maintenance Technician is responsible for the operation, maintenance, and reliability of 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. 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.

Requirements

High school diploma or equivalent; technical degree preferred.
Minimum 8 years of experience in critical infrastructure operations (data centers, substations, industrial power, manufacturing, or similar environments).
Minimum 5 years of leadership experience managing multi-disciplinary operations teams in a mission-critical data center or critical infrastructure environment supporting 24/7 operations and uptime expectations.
Strong understanding of electrical safety practices, including LOTO and energized work controls.
Ability to plan and execute complex work in a high-risk, uptime-critical environment.
Strong communication skills with the ability to lead in the field and provide clear executive-level updates.
Must provide own steel-toed work boots; all other required PPE will be supplied.
Ability to walk job sites, climb ladders and stairs, and perform field inspections and oversight.
Must be able to reliably commute to the work site daily or relocate prior to start.
Must be comfortable working a rotational schedule, including days, nights, weekends, and holidays as required.
Must be able to respond during off-hours for emergency events.

Nice To Haves

Proven experience supporting MV/HV power systems (switchgear, breakers, transformers, substations) and coordinating switching, cutovers, and energization activities preferred.
Demonstrated expertise in NFPA 70E, LOTO control, and high-risk work planning with working knowledge of OSHA requirements preferred.
Experience driving high-quality PM/CM programs, backlog management, work order verification, and asset reliability improvements using a CMMS preferred.
Working knowledge of BMS, EPMS, SCADA, or DCIM monitoring platforms, including alarm response workflows and performance trending preferred.

Responsibilities

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 datacenter operations.

Benefits

Highly competitive compensation package that includes base salary, annual performance incentives, and opportunities to build long-term wealth through equity programs.
Total Compensation package may be inclusive of annual incentive bonus, equity (long-term incentive).
Relocation or Living-out-allowance / per diem (as applicable and based on successful candidate circumstances)
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
401(k) retirement plan with company match
Access to financial planning and legal services
Paid Time Off (PTO) and paid holidays
Internal skills training and advancement pathways
Professional development to support certifications, continuing education, or role related training
Company events and team-building activities
Employees working night shifts receive a 15% shift premium for hours worked during night shifts.