Maintenance Manager

Job Type: Full-time |
Location: Sweetwater, TX |
Department: Operations |
Reporting to: Site Manager |
Work Location Type: #onsite Overview

IREN is a vertically integrated AI Cloud provider delivering large‑scale data centers and GPU clusters for AI training and inference. Powered by a portfolio of grid‑connected land and renewable‑rich power resources across North America, Europe, and APAC, IREN operates data centers that run on 100% renewable energy. The Maintenance Manager will oversee daily operations of the HPC infrastructure, ensuring efficiency, availability, and scalability while leading a team of network engineers, electricians, and technicians.

• Lead and model a zero‑compromise safety culture across all operations and contractor activities, ensuring compliance with OSHA , NFPA 70E, LOTO, energized work controls, and permitting processes.
• Enforce and continuously improve safe work practices such as job briefings, pre‑task planning, switching orders, LOTO verification, arc‑flash and shock boundary compliance, and contractor safety onboarding, audits, and field coaching.
• Maintain operational excellence across critical infrastructure systems including high‑voltage substations and distribution, UPS systems, generators, ATS/STS, switch gear, power monitoring, and mechanical/HVAC systems.
• Support site reliability by ensuring systems operate within design limits, alarm response standards, and maintenance expectations, and lead coordinated responses to abnormal events such as alarms, equipment trips, and system failures.
• Own site maintenance performance and execution quality, including preventive maintenance planning, corrective maintenance prioritization, work order quality, and field readiness audits.
• Lead, develop, and support a multi‑trade operations workforce providing 24/7 coverage by setting clear expectations, reinforcing accountability, delivering consistent coaching, and managing performance.
• Foster a professional operations culture grounded in respect, integrity, teamwork, and high standards of execution.
• Manage relationships with key contractors and service partners by defining scope, coordinating schedules, enforcing safety and quality standards, reviewing proposals and quotes, and validating completed work.
• Partner with Engineering and Construction teams to support energization, commissioning, cutovers, and expansion milestones while ensuring operational readiness through documentation validation.
• Maintain accurate operational documentation and field controls, including switching procedures, LOTO plans, permits, authorization workflows, underground utility coordination, equipment logs, oil/DGA sampling, and incident follow‑ups.
• Recognize that the duties listed above are not exhaustive and may be modified or expanded as necessary to meet business needs.

• 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.
• Lineman or Electrical Journeyman certification or documented 8,000 trade hours with eligibility to take the TDLR exam.
• 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.
• Proven experience supporting MV/HV power systems and coordinating switching, cutovers, and energization activities.
• Demonstrated expertise in NFPA 70E, LOTO control, and high‑risk work planning with working knowledge of OSHA requirements.
• Experience driving high‑quality PM/CM programs, backlog management, work order verification, and asset reliability improvements using a CMMS.
• Working knowledge of BMS, EPMS, SCADA, or DCIM monitoring platforms, including alarm response workflows and performance…