Senior Field Service Technician EV Charging Tier III

Zero Impact Builders • Stockton, CA

12d • $75,000 - $85,000 • Onsite

About The Position

ChargeTronix is hiring a senior Tier III field service technician to serve as the top technical field position on its service team. The technician will work on ChargeTronix modular DC fast chargers, independently resolving complex escalations, commissioning new installations, and improving product reliability through root-cause analysis and structured feedback to engineering. The role owns uptime across a Southern California-based territory, mentors Tier I and Tier II technicians, and serves as the primary on-site technical contact for customers and site hosts. It reports to the Field Service Manager and has no direct reports.

The position requires substantial regional travel, with home base in Southern California, home most weekends, and periodic out-of-state air travel. The schedule is standard Monday-to-Friday hours, with a paid on-call rotation and occasional weekend or after-hours work for site emergencies. Technicians plan their routes and workdays to serve the most sites per trip.

The work involves diagnosing and repairing DC fast chargers at the component level, testing and commissioning charging sites, maintaining interoperability test vehicles, managing territory reliability and spare parts, coaching junior technicians, documenting service work, and following electrical safety requirements. The technician works outdoors in varied weather, around energized equipment, and in confined cabinet spaces, and uses a company vehicle for extended driving.

Compensation is $75,000–$85,000 per year depending on experience, credentials, and platform depth. Per diem on travel days and an on-call differential are paid in addition to base pay. The position is classified as full-time and exempt.

Requirements

• At least 5 years of hands-on electrical or electromechanical field service experience, including at least 3 years on EV charging equipment and at least 2 years on DC fast chargers rated 50 kW or above.
• Demonstrated component-level repair of DC fast-charging hardware, including power modules, control/communication boards, contactors, and cooling systems, as well as cable and connector replacement for CCS, NACS, or CHAdeMO.
• Experience with 480 V three-phase systems and high-voltage DC; able to read one-line diagrams, wiring diagrams, and schematics.
• A track record of training or leading technicians, or writing procedures used by others.
• One of the following credentials: California General Electrician Certification; a journeyman or master electrician license from another state; EVITP certification; or at least 5 years of documented DC fast-charger field service with component-level repair and California Electrician Trainee registration obtained within 90 days of hire.
• Current NFPA 70E qualified-person training or ability to complete it within 60 days of hire; training is company-provided.
• OSHA 10 certification; OSHA 30 is preferred.
• Current CPR/First Aid certification, including low-voltage rescue, or ability to complete it within 60 days of hire; training is company-provided.
• Valid driver's license with a clean driving record; able to pass a background check and DOT-style medical clearance for a company vehicle.
• Working knowledge of NEC, particularly Article 625, NFPA 70E, and OSHA 29 CFR 1910 Subpart S.
• Proficiency with multimeters, clamp meters, insulation-resistance testers, and torque tools; able to use an oscilloscope or data logger when needed.
• Able to read charger logs and PLC/CAN communication traces and identify where a charging session failed.
• Networking basics for connected chargers, including Ethernet, cellular modems, Wi-Fi, RS-485, and backend connectivity troubleshooting.
• Comfort using ticketing and CRM tools such as Salesforce or Zendesk, Microsoft Office or Google Workspace, and writing clear field reports.
• Independent and decisive on site, with judgment about when to seek help.
• Customer-focused and calm when communicating with site hosts and drivers about station outages; able to explain technical issues clearly.
• Reliable while traveling heavily and able to plan trips to maximize the number of sites served.

Nice To Haves

• Hands-on service experience on two or more DC fast-charger platforms, such as ABB, Tritium, BTC Power, SK Signet, Kempower, Alpitronic, Autel, ChargePoint, Sinexcel, Tellus, Longhorn, Blink, or Tesla.
• Working knowledge of OCPP 1.6J/2.0.1, ISO 15118, and DIN 70121, including how failed handshakes appear in logs.
• OEM manufacturer service certifications on any of the listed charger platforms.
• Experience commissioning solar, battery storage, UPS, or other power-electronics equipment.
• Aerial lift or forklift certification.
• Bilingual English/Spanish.
• OSHA 30 certification.

Responsibilities

• Resolve Tier I/II escalations involving power electronics, control and communication boards, contactors, cooling systems, cable and connector assemblies, and vehicle interoperability.
• Perform component-level repairs when appropriate, including work on power modules, SECC/PD/MCU boards, power supplies, contactors, IGBTs, and sensors.
• Interpret PLC, CAN, and OCPP logs to determine root causes; capture logs, photographs, and meter readings for engineering and warranty records.
• Provide remote phone and video support to junior technicians at active service sites.
• Commission new installations by verifying incoming 480 V service, grounding and bonding, torque values, firmware, network and OCPP registration, and payment and authorization.
• Conduct acceptance charge tests across vehicle platforms and CCS1, NACS, and CHAdeMO connector types; sign off that sites are ready for service.
• Maintain and update the test-vehicle fleet, including hardware, software, and adapters, and run interoperability tests as vehicles and NACS adapters enter the market.
• Carry out field upgrades and retrofit campaigns, including NACS cable and adapter retrofits, firmware rollouts, and engineering change orders.
• Own and report weekly on territory uptime, mean time to repair, and first-time-fix rate.
• Perform scheduled preventive maintenance according to the ChargeTronix checklist and recommend updates to it.
• Identify recurring faults across sites, drive them to root cause, and write field service bulletins and work instructions.
• Manage truck stock and territory spares; tag and return failed parts with complete failure data for RMA and warranty purposes.
• Train and ride along with Tier I/II technicians and sign off their readiness to work independently.
• Write and maintain SOPs, troubleshooting guides, and training materials for the service team.
• Act as the primary on-site contact for customers, site hosts, electrical contractors, utilities, and inspectors, explaining technical issues to non-technical audiences.
• Perform job hazard analyses, lockout/tagout, arc-flash risk assessments, and PPE selection on energized jobs; exercise stop-work authority and model safe practices.
• Perform electrical work in accordance with NEC, including Article 625, local codes, and manufacturer specifications.
• Complete an accurate field service report and close each visit's ticket on the same day.
• Proactively communicate issues, delays, risks, and parts needs to the service manager with a proposed solution.
• Keep tools, test equipment, vehicle, and PPE calibrated, organized, and inspection-ready.
• Perform other duties as assigned.

Benefits

• Medical, dental, and vision insurance.
• 401(k).
• Paid time off and holidays.
• Company vehicle, phone, laptop, tools, and PPE.
• Paid training and certification, including NFPA 70E, OSHA 30, EVITP, and OEM courses.
• Per diem on travel days.
• Paid on-call differential.
• Opportunity for advancement.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed