Senior Field Service Technician EV Charging Tier III

Zero Impact Builders•Oakland, CA

23d•$75,000 - $85,000•Onsite

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 complex faults, commissioning, territory reliability, and technical mentorship. The technician works independently with little supervision, makes on-site safety and repair decisions, and reports to the Field Service Manager. The role has no direct reports but acts as technical lead for Tier I/II technicians in the territory. The position 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 schedule is generally Monday through Friday during standard hours, with a paid on-call rotation and occasional weekend or after-hours work for down sites. 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. This is a full-time, exempt position. ChargeTronix 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 includes outdoor service in all weather, heat and cold, noisy environments, and confined charger cabinets. Technicians work around energized equipment up to 480 VAC and 1,000 VDC with appropriate PPE, drive for extended periods, and periodically fly. Physical activities include standing, walking, bending, kneeling, stooping, crouching, climbing, working from ladders or lifts, and frequently lifting or moving 50 pounds. Close and color vision are required to read displays, wiring, and indicator lights. Reasonable accommodations will be made for qualified individuals with disabilities.

Requirements

At least 5 years of hands-on electrical or electromechanical field-service experience, including at least 3 years working 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-charger 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 other 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 through company-provided training.
OSHA 10 certification; OSHA 30 is preferred.
Current CPR/First Aid certification, including low-voltage rescue, or completion within 60 days of hire through company-provided training.
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 charging 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 on-site decisions while recognizing when to seek help.
Customer-first communication and composure when stations are down, including the ability to explain technical issues clearly.
Reliability under heavy travel and ability to plan trips to maximize the number of sites served.
Ability to meet the physical and work-environment demands described in the posting, with reasonable accommodations where applicable.

Nice To Haves

Hands-on service experience on two or more DC fast-charger 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.

Responsibilities

Resolve Tier I/II escalations involving DC fast-charger power electronics, control and communication boards, contactors, cooling systems, cable and connector assemblies, and vehicle interoperability failures.
Perform component-level repairs where 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, photos, meter readings, and other evidence 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 OCPP backend registration, and payment and authorization functions.
Run acceptance charge tests across vehicle platforms and CCS1, NACS, and CHAdeMO connector types, 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 territory site uptime, mean time to repair, and first-time-fix rate on a weekly basis.
Perform scheduled preventive maintenance according to the ChargeTronix PM checklist and recommend checklist changes.
Identify repeat-fault patterns, drive root-cause investigations, 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.
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 for energized work 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 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 insurance
Dental insurance
Vision insurance
401(k)
Paid time off
Paid holidays
Company vehicle
Company phone
Company laptop
Company 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
Competitive salary
Opportunity for advancement