Senior Field Service Technician EV Charging Tier III

Zero Impact Builders • San Francisco, CA

12d • $75,000 - $85,000 • Onsite

About The Position

ChargeTronix is hiring a senior Tier III field service technician to support its modular DC fast chargers across a Southern California-based territory. This is the service team’s top technical field position and serves as the escalation point for difficult charger faults, new-site commissioning, territory reliability, and mentoring Tier I and Tier II technicians. The technician works independently with little supervision, makes on-site safety and repair decisions, and serves as a primary contact for customers and site hosts. The role reports to the Field Service Manager and has no direct reports, but acts as a technical lead for technicians in the territory.

The work includes diagnosing and repairing DC fast-charger systems at component level, commissioning and testing installations, performing preventive maintenance and upgrade campaigns, managing territory uptime and spares, investigating repeat faults, and documenting findings for engineering, warranty, and field procedures. The technician provides remote support to junior technicians, trains and signs off their readiness, and communicates technical issues to customers, contractors, utilities, and inspectors.

The position is full-time and exempt, 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 usual schedule is Monday through Friday standard hours, with a paid on-call rotation and occasional weekend or after-hours work during outages. Home most weekends. Pay is $75,000–$85,000 per year depending on experience, credentials, and platform depth; travel-day per diem and an on-call differential are additional. The role includes fieldwork outdoors in varied weather and environments, work around energized equipment, frequent driving, and periodic air travel.

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 DCFC 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; ability to read one-lines, wiring diagrams, and schematics.
• Track record of training or leading other technicians, or writing procedures used by others.
• One of the following credentials: California General Electrician Certification; journeyman/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 ability to complete it within 60 days of hire; company-provided training is available.
• OSHA 10 certification; OSHA 30 is preferred.
• Current CPR/First Aid, including low-voltage rescue, or ability to complete it within 60 days of hire; company-provided training is available.
• Valid driver’s license with a clean driving record; 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; ability to use an oscilloscope or data logger when needed.
• Ability to read charger logs and communication traces, including PLC and CAN, 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 using ticketing and CRM tools such as Salesforce, Zendesk, or similar, Microsoft Office or Google Workspace, and writing clear field reports.
• Independent and decisive on site, with sound judgment about when to request help.
• Customer-first communication, including remaining calm during outages and clearly explaining technical issues.
• Ability to work reliably with heavy travel and plan routes to maximize sites served per trip.

Nice To Haves

• Hands-on service experience on two or more DCFC 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 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

• Diagnose and 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 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 evidence such as 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 OCPP backend registration, and payment/authorization.
• Conduct acceptance charge tests across vehicle platforms and connector types, including CCS1, NACS, and CHAdeMO, and sign off sites as ready for service.
• Maintain and update the test-vehicle fleet and conduct interoperability tests as vehicles and NACS adapters enter the market.
• Execute 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 to the ChargeTronix checklist and recommend checklist updates.
• Identify repeat-fault patterns, determine root causes, and write field service bulletins and work instructions.
• Manage truck stock and territory spares; tag and return failed parts with complete 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 training materials.
• Serve as the primary on-site contact for customers, site hosts, electrical contractors, utilities, and inspectors, explaining technical issues clearly 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 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 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.
• Competitive salary.

What This Job Offers

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