Senior Field Service Technician EV Charging Tier III

Zero Impact Builders • Ontario, CA

12d • $75,000 - $85,000

About The Position

ChargeTronix designs and builds modular DC fast chargers intended to be serviced in the field. The Senior (Tier III) Field Service Technician is the top technical field position on the service team and serves as the escalation point for difficult faults, commissions new sites, and turns recurring failures into documented root causes and field guidance. The technician works independently with little supervision and is trusted to make on-site safety and repair decisions.

The role is responsible for uptime across a Southern California-based territory, mentoring Tier I/II technicians, serving as the primary on-site contact for customers and site hosts, and providing structured failure data to engineering. It reports to the Field Service Manager and has no direct reports, while serving as the technical lead for Tier I/II technicians in the territory.

The position is full-time and exempt, with 75% or more travel. Travel includes multi-day regional vehicle trips and periodic out-of-state air travel; the technician is home most weekends. The schedule is generally Monday to Friday standard hours, with a paid on-call rotation and occasional weekend or after-hours work when a site is down. Compensation is $75,000 to $85,000 per year depending on experience, credentials, and platform depth, with per diem on travel days and an on-call differential in addition to base pay.

The company provides medical, dental, and vision coverage; a 401(k); paid time off and holidays; a company vehicle, phone, laptop, tools, and PPE; and paid training and certification. The work is field-based and involves outdoor conditions in all weather, heat and cold, noisy environments, confined charger cabinet spaces, energized equipment, extended driving, and periodic air travel. Physical duties include frequent lifting and moving of 50 pounds and occasional heavier items with assistance or equipment. 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, cooling systems, and cable or connector replacement for CCS, NACS, or CHAdeMO.
• Experience with 480 V three-phase systems and high-voltage DC, and the ability to read one-line diagrams, wiring diagrams, and schematics.
• A track record of training or leading technicians, or writing procedures that others 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 registration obtained within 90 days of hire.
• Current NFPA 70E qualified-person training or completion within 60 days of hire; training is company-provided.
• OSHA 10 certification; OSHA 30 is preferred.
• Current CPR/First Aid, including low-voltage rescue, or completion within 60 days of hire; training is company-provided.
• Valid driver's license with a clean driving record, ability to pass a background check, and ability to obtain 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 fundamentals 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 decisions on site while recognizing when to seek help.
• Customer-first communication style, including remaining calm with site hosts and drivers and clearly explaining technical issues.
• Reliability and planning skills for heavy travel and maximizing the number of sites served per trip.
• Ability to regularly stand, walk, bend, kneel, stoop, crouch, climb, and work from ladders or lifts.
• Ability to frequently lift and move 50 pounds and occasionally handle heavier items with assistance or equipment.
• Ability to work outdoors in all weather, in heat and cold, in noisy environments, in confined cabinet spaces, and around energized equipment up to 480 VAC and 1,000 VDC with appropriate PPE.
• Ability to drive a company vehicle for extended periods and fly periodically.
• Close and color vision to read displays, wiring, and indicator lights.

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 recognizing failed handshakes in logs.
• OEM manufacturer service certifications on any of the listed 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 III DC fast-charger faults involving power electronics, control and communication boards, contactors, cooling systems, cable and connector assemblies, and vehicle interoperability.
• Perform component-level repairs where appropriate, including work on power modules, SECC/PD/MCU boards, power supplies, contactors, IGBTs, and sensors.
• Read and interpret PLC, CAN, and OCPP logs to identify root causes, and capture logs, photos, and meter readings for engineering and warranty.
• 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.
• Run acceptance charge tests across 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 run interoperability tests as new 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 updates.
• Identify repeat-fault patterns, 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 SOPs, troubleshooting guides, and service-team training materials.
• Serve 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 analysis, lockout/tagout, arc-flash risk assessment, and PPE selection on energized jobs as an NFPA 70E qualified person; exercise stop-work authority and model safe work.
• Perform electrical work according to NEC, including Article 625, local code, and manufacturer specifications.
• Complete an accurate field service report and close the ticket the same day for every 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