Senior Field Service Technician EV Charging Tier III

Zero Impact Builders • San Bernardino, CA

24d • $75,000 - $85,000

About The Position

ChargeTronix is seeking a Senior (Tier III) Field Service Technician to provide advanced field support for its modular DC fast chargers. This is the top technical field position on the service team and serves as the escalation point for difficult faults, the commissioning lead for new sites, and a technical lead and mentor for Tier I/II technicians. The technician owns uptime and reliability across a territory, works independently with little supervision, makes on-site safety and repair decisions, and provides structured failure data to engineering. The position reports to the Field Service Manager and has no direct reports.

The role is field-based, with a Southern California home base and travel of 75% or more, including multi-day regional vehicle trips and periodic out-of-state air travel. The position is full-time and exempt. The standard schedule is Monday through Friday, with a paid on-call rotation and occasional weekend or after-hours work for site outages. Technicians plan their own routes and workdays, and are generally home most weekends.

Compensation is $75,000 to $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. Benefits include medical, dental, and vision coverage; 401(k); paid time off and holidays; a company vehicle, phone, laptop, tools, and PPE; and paid training and certification.

The position involves working outdoors in all weather and in noisy or confined cabinet spaces, around energized equipment up to 480 VAC and 1,000 VDC with appropriate PPE. It requires regular standing, walking, bending, kneeling, stooping, crouching, climbing, and ladder or lift work; frequent lifting and moving of 50 pounds; extended driving; and periodic air travel. Close and color vision are required to read displays, wiring, and indicator lights. Reasonable accommodations will be made to enable qualified individuals with disabilities to perform the essential functions.

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 experience on DC fast-charging hardware, including power modules, control or 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.
• Ability to read one-line diagrams, wiring diagrams, and schematics.
• A track record of training or leading technicians, or writing procedures for others to follow.
• 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 DCFC field service with component-level repair and California Electrician Trainee (ET) 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; OSHA 30 is preferred.
• Current CPR/First Aid 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, and ability 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, and ability to use an oscilloscope or data logger when needed.
• Ability to read charger logs and PLC/CAN communication traces and identify where a charge session failed.
• Networking basics for connected chargers, including Ethernet, cellular modems, Wi-Fi, RS-485, and backend connectivity troubleshooting.
• Comfort with ticketing and CRM tools such as Salesforce, Zendesk, or similar; Microsoft Office or Google Workspace; and writing clear field reports.
• Ability to work independently and make sound on-site decisions while recognizing when to seek assistance.
• Customer-first communication skills, including remaining calm with site hosts and drivers during outages and clearly explaining technical issues.
• Reliability under heavy travel and ability to plan routes to maximize the sites served per trip.
• Ability to meet the physical requirements of the role, including frequent lifting and moving of 50 pounds and working around energized equipment with appropriate PPE.

Nice To Haves

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

Responsibilities

• Resolve Tier III DC fast-charger faults, including faults involving power electronics, control and communication boards, contactors, cooling systems, cable and connector assemblies, and vehicle interoperability.
• Perform component-level repairs when appropriate, including repairs to power modules, SECC/PD/MCU boards, power supplies, contactors, IGBTs, and sensors.
• Interpret PLC, CAN, and OCPP logs to identify root causes, and capture logs, photographs, and meter readings for engineering and warranty purposes.
• Provide remote phone and video support to junior technicians working at live sites.
• Commission new installations by verifying incoming 480 V service, grounding and bonding, torque values, firmware, network and backend OCPP registration, and payment and authorization functionality.
• Run acceptance charge tests across multiple vehicle platforms and connector types, including CCS1, NACS, and CHAdeMO, and sign off that sites are ready for service.
• Maintain and update the test-vehicle fleet and conduct interoperability tests as vehicles and NACS adapters enter the market.
• Execute field upgrade 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 using the ChargeTronix PM checklist and recommend checklist changes.
• Identify recurring faults across sites, drive them to root cause, and write field service bulletins and work instructions.
• Manage truck stock and territory spares, and tag and return failed parts with complete failure data for RMA and warranty.
• Train and ride along with Tier I/II technicians, and sign off their readiness to work independently.
• Write and maintain service-team SOPs, troubleshooting guides, and training materials.
• Serve as the primary on-site contact for customers, site hosts, electrical contractors, utilities, and inspectors, and explain technical issues to non-technical audiences.
• Perform job hazard analyses, lockout/tagout, arc-flash risk assessments, and PPE selection for energized jobs as an NFPA 70E qualified person; exercise stop-work authority and model safe work practices.
• Perform electrical work in accordance with NEC, including Article 625, local code, and manufacturer specifications.
• Complete an accurate field service report and close the ticket on the same day as each visit.
• 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 coverage.
• 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