Electrical Assistant Supervisor

Riot’s (NASDAQ: RIOT) vision is to be the world’s most trusted platform for powering and building digital infrastructure.

Riot’s mission is to empower the future of digital infrastructure by positivelyimpactingthe sectors, networks, and communities that we touch. We believe that the combination of an innovative spirit and strong community partnership allows us to achieve best-in-class execution and create successful outcomes.

At Riot,we’rebuilding the future of digital infrastructure. Our team members have unparalleled opportunities to work on groundbreaking initiatives. Through technical excellence and strategic execution, Riot has positioned itself as a leader in the industry driving advancements that continue to set new benchmarks in digital infrastructure.

Weare trailblazers. Problem solvers. People who thrive in fast paced environments,communicate clearly, and bring relentless focus to efficiency and execution.

The Electrical Assistant Supervisor supports the Electrical Maintenance Supervisor in directing daily electrical maintenance at a mission-critical data center. This role leads and mentors Tier 1–3 technicians, performs hands-on maintenance and troubleshooting of critical power systems such as generators, UPS, switch gear, transformers, and PDUs, and serves as the first point of escalation for complex issues. The Assistant Supervisor enforces LOTO, arc flash, and NFPA 70E and NFPA 70B safety standards, oversees contractors, maintains CMMS records, responds to power alarms and emergencies, and directs shift operations when the primary supervisor is offsite.

• Assign daily work, review shift schedules, and prioritize open work orders for the electrical team. Run shift operations when the primary supervisor is offsite.
• Perform maintenance, inspections, and troubleshooting on critical power systems, including backup generators, UPS systems, switch gear, transformers, and PDUs.
• Review methods of procedure (MOPs) and safety checklists before work begins. Confirm switching steps are clear, risks are identified, and backup power paths are verified.
• Lead daily pre-job safety briefings. Enforce LOTO protocols and NFPA 70E standards, and make sure the crew consistently wears proper arc-flash protection and PPE.
• Escort and monitor outside contractors and vendors performing specialized service or testing. Verify their work meets quality standards and facility rules.
• Keep accurate records of completed tasks, equipment run hours, and spare parts in the CMMS. Make sure inspection logs and test reports are properly filed.
• Train and mentor junior technicians on maintenance tasks, diagnostic tools, and safe work habits through consistent day-to-day coaching.
• Respond immediately to power alarms and system interruptions during shifts and on-call rotations. Assist with emergency recovery to protect the critical data center load.
• Other duties may be assigned.

• Completion of an electrical apprenticeship, an associate degree in an electrical trade, or equivalent practical experience.
• At least 4 years of commercial or industrial electrical maintenance experience, including at least 1 year serving as a lead technician or crew chief.
• Solid understanding of electrical power distribution equipment, including switch gear, generators, transfer switches, and UPS systems.
• Demonstrated ability to read and interpret electrical one-line diagrams, schematics, and technical manuals.
• Strong practical knowledge of electrical safety rules, arc-flash hazards, and lockout/tagout procedures.
• Clear communication skills and the ability to coordinate tasks smoothly across maintenance and operations teams.

• Ability to stand,…