Senior Field Service Technician EV Charging Tier III

ChargeTronix • Tustin, CA

28d • $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 in a Southern California-based territory. This is the service team’s top technical field position and serves as the escalation point for difficult faults, new-site commissioning, reliability improvements, and technical mentorship. The technician works independently with little supervision, makes on-site safety and repair decisions, and acts as the primary on-site contact for customers and site hosts. The role reports to the Field Service Manager and has no direct reports, but provides technical leadership to Tier I and Tier II technicians.

The technician diagnoses and repairs DC fast-charger hardware, including power electronics, control and communication boards, contactors, cooling systems, and cable and connector assemblies. The role includes component-level repairs, analysis of PLC, CAN, and OCPP logs, evidence collection for engineering and warranty, and remote support for junior technicians. Responsibilities also include commissioning new installations, verifying electrical and network readiness, performing acceptance charge tests across vehicle and connector platforms, maintaining a test-vehicle fleet, and completing field upgrades and retrofits.

The technician owns territory uptime, repair time, and first-time-fix performance; performs preventive maintenance; identifies recurring faults and documents root causes; and manages territory spares and failed-part returns. They train and assess junior technicians, maintain service procedures and training materials, communicate technical issues to customers and other site stakeholders, and complete field reports and ticket closures. Safety practices include hazard analysis, lockout/tagout, arc-flash assessment, appropriate PPE, and compliance with applicable electrical codes and manufacturer specifications.

The position is full-time and exempt, with base pay of $75,000 to $85,000 per year depending on experience, credentials, and platform depth. Per diem for travel days and an on-call differential are paid in addition to base pay. Travel is 75% or more, including multi-day regional driving trips and periodic out-of-state air travel; the home base is Southern California, with the technician home most weekends. The normal schedule is Monday through Friday standard hours, with a paid on-call rotation and occasional weekend or after-hours work for site outages. Technicians plan their own routes and workdays.

ChargeTronix designs and builds field-serviceable modular DC fast chargers and connects field technicians directly with the engineers who designed its equipment. The role involves extensive outdoor and field work, use of a company vehicle, and work around energized equipment up to 480 VAC and 1,000 VDC using appropriate PPE. Reasonable accommodations will be made to enable qualified individuals with disabilities to perform essential functions.

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 of DC fast-charger hardware, including power modules, control or communication boards, contactors, or cooling systems, and cable or 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 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 DCFC field service with component-level repair, plus 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; 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 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, Zendesk, or similar, and Microsoft Office or Google Workspace; ability to write clear field reports.
• Ability to work independently and make decisive on-site judgments while knowing when to request assistance.
• Customer-first communication, including remaining calm with site hosts and drivers during station outages and explaining events clearly.
• Reliability during heavy travel and ability to plan weekly routes to maximize the number of sites served per trip.

Nice To Haves

• Hands-on service experience with at least two 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 or 2.0.1, ISO 15118, and DIN 70121, including recognizing failed handshakes in logs.
• OEM manufacturer service certifications for one or more of the listed platforms.
• Experience commissioning solar, battery storage, UPS, or other power-electronics equipment.
• Aerial lift or forklift certification.
• Bilingual English and Spanish.

Responsibilities

• Diagnose and resolve Tier III DC fast-charger faults, including power electronics, control and communication boards, contactors, cooling systems, cable and connector assemblies, and vehicle interoperability issues.
• Perform component-level repairs on charger hardware where appropriate rather than defaulting to a full-unit replacement.
• Interpret PLC, CAN, and OCPP logs to identify root causes and capture logs, photos, 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 OCPP backend registration, and payment or authorization functions.
• Conduct acceptance charging 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 testing for new vehicles and NACS adapters.
• Execute field upgrade and retrofit campaigns, including 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 and recommend updates to the maintenance checklist.
• Identify recurring faults across sites, drive root-cause investigations, and write field service bulletins and work instructions.
• Manage truck stock and territory spare parts, and tag and return failed parts with complete failure data for RMA and warranty.
• Train and ride along with Tier I and Tier 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; explain technical issues to non-technical audiences.
• Perform job hazard analysis, lockout/tagout, arc-flash risk assessment, and PPE selection on energized jobs; exercise stop-work authority and model safe work practices.
• Perform electrical work to NEC, including Article 625, local code, and manufacturer specifications.
• Complete an accurate field service report and close each ticket on the same day as the 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 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