FIELD SERVICE TECHNICIAN

Field Service Mechanic (Utility Trucks & Heavy Equipment)

Custom Truck One Source (CTOS) is a leading provider of specialty trucks, equipment, rentals, parts, and service solutions supporting the utility, telecommunications, and rail industries across North America. With a nationwide fleet of more than 10,000 units, we help customers build, maintain, and restore critical infrastructure.

What You'll Work On

• Bucket trucks, Digger derricks, Truck-mounted cranes, Utility and vocational trucks, Hydraulic and electrical systems, Diesel-powered equipment.

What We Offer

• Company service truck equipped with crane and welder
• Company laptop and cell phone
• Monday-Friday, weekends as needed, average 50 plus hours a week
• Paid training and manufacturer certification programs
• Opportunity to work independently while supporting a growing customer base

Position Summary

As a Field Service Mechanic, you will diagnose, repair, inspect, and maintain utility trucks and heavy equipment in the field. This role requires strong mechanical, hydraulic, electrical, and diagnostic skills, along with a commitment to safety and customer service.

Key Responsibilities

• Diagnose, troubleshoot, and repair utility trucks, aerial devices, digger derricks, cranes, hi-rail equipment, and related machinery.
• Perform preventative maintenance inspections and scheduled services.
• Troubleshoot hydraulic, electrical, diesel engine, CAN Bus, and LMI (Load Moment Indicator) systems.
• Read and interpret schematics, wiring diagrams, service manuals, and technical documents.
• Utilize diagnostic software and electronic troubleshooting tools.
• Complete repair orders, inspection reports, timecards, and service documentation accurately.
• Communicate repair status and recommendations to customers and management.
• Ensure repairs are completed safely, efficiently, and to manufacturer standards.
• Participate in company and manufacturer training programs.
• Travel overnight as needed to support customer requirements.

Preferred Qualifications

• 5+ years of experience as a diesel, heavy equipment, utility equipment, crane, or field service mechanic.
• Strong hydraulic and electrical troubleshooting experience.
• Ability to read electrical schematics and hydraulic diagrams.
• Welding and fabrication experience preferred.
• Experience with diagnostic software such as Cummins INSITE, QuickServe, DTNA DiagnosticLink, or similar platforms.
• DOT, ANSI, or Dielectric testing experience is a plus.
• CDL Class B preferred.

Requirements

• High School Diploma or GED.
• Valid driver's license.
• Must provide personal mechanic tools.
• Ability to work independently with minimal supervision.
• Strong customer service and communication skills.

Physical Requirements

• Lift and carry up to 50 lbs.
• Work outdoors in varying weather conditions.
• Frequent bending, kneeling, climbing, and standing.
• Comfortable working at heights and around heavy equipment.
• Ability to safely operate tools, equipment, and service vehicles.

Ideal Candidate Background

We welcome applicants with experience as: Field Service Mechanic, Mobile Diesel Mechanic, Heavy Equipment Mechanic, Crane Mechanic, Utility Equipment Technician, Aerial Lift Technician, Fleet Mechanic, Construction Equipment Technician, or Diesel Technician.

Custom Truck One Source is an Equal Opportunity Employer and provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.

Please note that we do not offer sponsorship for work authorization. Only candidates authorized to work in United States without the need for sponsorship will be considered for this position.