Electrical Assistant Supervisor

About this role

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, switchgear, 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. This role is located in Rockdale, TX.

What you’ll be doing

• 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, switchgear, 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.

What you’ll have

• Completion of an electrical apprenticeship, an associate degree in an electrical trade, or equivalent practical experience.
• At least 3 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 switchgear, 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.

Physical requirements and work environment

• Ability to stand, walk, and perform repetitive tasks for extended periods

• Ability to lift and move equipment as needed (50 pounds)

• Ability to work onsite in a mining or data center environment (heat, noise, etc.)

• Exposure to high noise levels and varying temperatures

Safety Requirements

• PPE & Compliance: Strictly adhere to all site safety protocols and wear required Personal Protective Equipment (PPE) at all times (e.g., safety glasses, hearing protection, steel-toed boots).

• Hazard Awareness: Proactively identify, report, and mitigate potential workplace hazards or unsafe conditions.

• Standards: Maintain compliance with OSHA regulations and internal safety training.

• Organization: Keep all work areas clean and free of obstructions to prevent workplace accidents.

Compensation and Benefits

• Salary commensurate with experience.

• 401(k) retirement plan: Incudes a generous company match.

• Comprehensive health coverage: Multiple medical plan options, including 100% company-paid plans, HAS & FSA.

• Work-life balance: Paid time off, sick time and floating holidays.

• Wellness & lifestyle perks: Enjoy free gym memberships, pet insurance, childcare discounts, employee assistance program, and more to support your life both in and out of work.

Riot is an equal opportunity employer. We are committed to creating an inclusive environment for all employees.