Field Service Technician II - BESS

ON.energy is building the backbone of energy and AI infrastructure powering grid-safe data centers and mission-critical facilities. The company supplies and operates hyperscale power systems that solve the toughest resilience challenges, delivering custom solutions for AI data centers, mission-critical facilities, and front-of-the-meter assets. ON recently announced a 5GW partnership, with 3GW currently under construction across multiple hyperscale data center campuses. With patented technology and proprietary software, ON.energy develops projects worldwide that set new benchmarks for resilience. Location: Amarillo, TX Compensation: Salary, annual incentive bonus 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. Adhere to PM 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. On-Call & After-Hours Response Participate in a rotating on-call schedule, maintaining availability to respond to site alarms and equipment issues outside of standard business hours, including evenings and weekends. Respond to on-call callouts within the required response time and take appropriate action to restore equipment to safe and operational status. Communicate clearly with the O&M Manager during after-hours events, providing timely status updates and escalating where required. 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. 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. Report all near-misses, incidents, and unsafe conditions to the O&M Manager immediately. Qualifications Required Associate degree, technical diploma, trade certification, or equivalent hands-on experience in Electrical Technology, Electronics, Power Systems, or a related field. 3-5 years of experience maintaining electrical systems, energy storage assets, renewable energy facilities, or critical infrastructure. Ability to read and interpret single-line diagrams, wiring schematics, and technical manuals. Valid driver's license. Ability to obtain and maintain CPR, OSHA 10/30, and NFPA 70E certifications. Availability for rotating on-…