ON.energy is setting the standard for large load interconnection. ON’s patented AI UPS™ is a medium-voltage UPS that serves as a firewall, protecting the data center from the grid, and the grid from the data center. With multiple gigawatts currently under construction, we are enabling grid-safe data centers.

ON.energy is seeking a skilled Field Service Technician to support day-to-day operations across a portfolio of five or more ON.energy projects in the Houston area. Reporting directly to the Operations & Maintenance Manager, the technician is responsible for executing preventative and reactive maintenance activities on ON.energy equipment and inverter systems at each site, ensuring maximum asset reliability and uptime across the portfolio. The role follows a standard daytime schedule; after-hours or weekend response is occasional and infrequent.

Key Responsibilities

Preventative Maintenance

Execute scheduled preventative maintenance (PM) tasks on ON.energy BESS equipment, inverters, and associated electrical infrastructure in accordance with OEM requirements and site-specific maintenance plans.
Perform routine inspections, functional testing, and condition monitoring to identify potential issues before they result in equipment failure or unplanned downtime.
Maintain accurate PM records and equipment histories within the CMMS, ensuring all work orders are opened, updated, and closed in real time.
Plan and prioritize PM activities across multiple sites, adhere to scheduling windows, and notify the O&M
Manager promptly of any deferred work, observed anomalies, or required escalations.

Reactive Maintenance & Troubleshooting

Respond to equipment alarms, faults, and unplanned failures in a timely manner, performing systematic diagnosis and root cause identification.
Execute testing procedures including insulation resistance, continuity, and functional testing to isolate faults and confirm equipment readiness post-repair.
Perform component-level repair and replacement on inverters, battery modules, switchgear, and associated balance-of-plant equipment.
Document all corrective maintenance activities, findings, and parts used within the CMMS and report outcomes to the O&M Manager.
Support occasional after-hours or weekend response when site conditions require it, keeping the O&M Manager informed with timely status updates.

Site Coordination & Continuous Improvement

Supervise and coordinate contractors, vendors, and ON.energy resources performing service work on site.
Support coordination with energy dispatch to schedule outages and complete performance testing for services work.
Identify and report field service risks to the O&M Manager and other relevant stakeholders.
Travel regularly between Houston-area project sites to execute planned work and to investigate and resolve issues, or supervise their resolution, as needed.
Travel as requested to ON.energy projects outside the Houston area to support maintenance, troubleshooting, or project needs at other sites.
Support continuous improvement by documenting lessons learned and opportunities to increase efficiency.

CMMS & Data Integrity

Create, update, and close work orders within the CMMS for all preventative and corrective maintenance activities in accordance with site data entry standards.
Ensure equipment histories, parts consumption, and labor records are accurately captured to support asset lifecycle management and reporting.
Follow CMMS workflows and procedures as directed by the O&M Manager; contribute to continuous improvement of maintenance records and documentation quality.

Safety & Compliance

Adhere to all site safety protocols, OSHA standards, NFPA 70E electrical safety requirements, and ON.energy work instructions at all times.
Assist in the monitoring and enforcement of safety procedures, quality standards, and best practices on site.
Participate actively in toolbox talks, safety briefings, incident investigations, and corrective action implementation.
Maintain personal protective equipment (PPE) and ensure proper lockout/tagout (LOTO) procedures are followed for all maintenance activities.