Maintenance Supervisor

Maintenance Supervisor

We are currently recruiting a Maintenance Supervisor to join our team and contribute to key projects in a dynamic and collaborative environment. This role is part of a global team working toward common goals. We operate as one company, across all locations, with shared responsibility and clear accountability.

The Maintenance Supervisor leads the on-site maintenance team responsible for the safe, reliable, and efficient operation of the Company's utility-scale solar photovoltaic (PV) plants in Southern California (Barstow, Hinkley, Calexico), currently comprising Imperial Sun Solar and Overnight Solar. The portfolio is expected to grow as additional PV assets under development in Southern California and Arizona reach commercial operation, and this role will play a key part in bringing those new sites into steady-state operations and maintenance.

The Supervisor directs the day-to-day work of maintenance technicians, oversees preventive and corrective maintenance across PV modules, inverters, trackers, combiner boxes, and balance-of-plant equipment, and serves as the primary on-site point of escalation for equipment failures, safety events, and performance issues. This is a full-time position based in the Imperial Valley, with regular travel between plant sites as the portfolio expands.

1. Team Supervision & Workforce Management Supervise, schedule, and develop a team of PV maintenance technicians across Imperial Sun Solar, Overnight Solar, and additional sites as the portfolio expands. Assign daily work, balance staffing across sites, and ensure adequate coverage for planned maintenance, corrective work, and emergency response. Conduct performance reviews, one-on-ones, and skills assessments; identify training needs and support technician development and retention.

Establish and enforce Standard Operating Procedures (SOPs), safety protocols, and work-quality standards across all supervised sites. Serve as the primary point of escalation for technicians on complex equipment issues or field safety concerns.

2. Preventive & Corrective Maintenance Plan and oversee preventive maintenance (PM) programs for PV modules, inverters, combiner boxes, trackers, transformers, switch gear, and balance-of-plant systems. Direct corrective maintenance response to equipment failures, underperformance alerts, and inspection findings to minimize downtime and lost generation. Review maintenance data and performance trends to identify recurring failure modes and drive root-cause analysis with O&M engineering. Ensure spare parts availability and coordinate with procurement/supply chain on critical components and long-lead items.

3. Safety, Compliance & Site Standards Champion a strong safety culture; ensure full compliance with Lock Out / Tag Out (LOTO), arc-flash, and high-voltage safety procedures across all sites. Conduct or oversee job safety analyses (JSAs), toolbox talks, and safety audits; ensure timely close-out of corrective actions. Ensure compliance with OSHA, NEC, and NFPA 70E requirements, plus applicable state and local environmental regulations.

Maintain site access, security, and environmental compliance standards (stormwater, vegetation management, and habitat requirements as applicable).

4. Monitoring Coordination & Work Order Management Partner with the Remote Operations Center (ROC) / SCADA monitoring team to triage alarms, prioritize response, and confirm resolution of equipment issues. Ensure technicians create, update, and close SAP Plant Maintenance (PM) Work Orders, or the equivalent CMMS, accurately and on schedule. Monitor Work Order backlog and escalate aging or high-priority items to the O&M Manager and asset management team.

Participate in daily and weekly maintenance planning meetings to align field activity with generation forecasts and outage schedules.

5. Vendor, Warranty & Contractor Management Coordinate on-site work performed by OEM service providers, warranty technicians, and specialty subcontractors (module, inverter, tracker, and electrical contractors). Track warranty claims and performance-guarantee issues; ensure timely documentation and follow-up with…