Field Service Technician III

The role

The technician executes preventative and reactive maintenance on BESS equipment, inverters, and electrical infrastructure. They support day-to-day operations across multiple projects in the Houston area.

What you will do

• Execute scheduled preventative maintenance on BESS equipment, inverters, and electrical infrastructure
• Perform routine inspections, functional testing, and condition monitoring
• Maintain accurate PM records and equipment histories within the CMMS
• Respond to equipment alarms, faults, and unplanned failures
• Perform component-level repair and replacement on inverters, battery modules, and switchgear
• Supervise and coordinate contractors, vendors, and resources on site
• Create, update, and close work orders within the CMMS
• Adhere to site safety protocols, OSHA standards, and NFPA 70E requirements
• Participate in toolbox talks, safety briefings, and incident investigations
• Travel between Houston-area project sites and occasionally to other project locations

Required qualifications

• 2+ years of field experience in electrical systems maintenance, commissioning, energy storage, renewables, or critical infrastructure environments
• Ability to read and interpret single-line diagrams, wiring schematics, and equipment manuals
• Working understanding of SCADA, networking, and communication systems
• Willingness to learn and consistently apply CMMS workflows
• Proficient with Microsoft Office
• Must be able to obtain and maintain CPR, OSHA 10/30, and NFPA 70E certifications upon hire
• Valid driver’s license
• Able to occasionally lift 25–50 lbs
• Able to perform field work outdoors in varying weather conditions
• Must reside in or near the Houston, TX area, or be willing to relocate prior to start date

Nice to have

• Hands-on experience with inverters, battery systems, or HV/MV electrical equipment
• Prior experience with a CMMS platform (e.g., IBM Maximo, UpKeep, Fiix, or equivalent)

Benefits

• Competitive salary
• Annual performance-based bonus eligibility
• Medical, dental, and vision insurance
• 401(k) with company match
• Paid time off
• Company holidays
• Professional development and growth opportunities

About the company

ON.energy provides a medium-voltage UPS that protects data centers from the grid and vice versa. The company is enabling grid-safe data centers with multiple gigawatts under construction.