Field Service Technician - BESS

ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper-scale campuses, validated by top U.S. national labs, and certified for grid-safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future.

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.
• 2 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-call, weekend, and holiday coverage.
• Must reside in or relocate to the Amarillo, TX area.

Preferred

• Experience with battery energy storage systems (BESS), inverters, switchgear, or medium/high-voltage equipment.
• Experience using CMMS platforms such as IBM Maximo, UpKeep, Fiix, or similar systems.

What We Offer

• Competitive compensation with overtime eligibility
• Relocation assistance for qualified candidates
• On-call differential pay
• Medical, dental, and vision insurance
• 401(k) retirement plan with company match
• Opportunity to work on a high-profile data center project utilizing advanced energy storage technology
• Career growth within a rapidly expanding energy infrastructure company

ON.energy is committed to creating an inclusive workplace and welcomes applicants from diverse backgrounds and experiences.

For US-based roles - What you’ll get:

• Competitive salary annual performance-based bonus eligibility
• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off and company holidays 

For Mexico-based roles - What you’ll get:

• Competitive salary annual performance bonus eligibility
• Christmas Bonus (Aguinaldo): 30 days
• Major medical expenses and life insurance
• Paid time off and holidays (per local policy)

For all roles:

• Professional development and growth opportunities
• Opportunity to grow with a mission-driven team shaping the future of clean energy
• Equal Opportunity: ON.energy is committed to equal employment opportunity and to maintaining a work environment free of harassment, discrimination, or retaliation.
• Accommodations: If you need an accommodation during the application process, email recruitment@onenergystorage.com
• Benefits vary by role and location and are subject to change.