Mechanic Utility Trucks

Field Service Tech (Truck, Aerial, Hydraulics, Electrical)

Custom Truck One Source (CTOS)a 30-year-old company with 40 locations across the U.S. and Canada—is seeking Field Service Technicians to be based on the Big Island or Oahu to perform maintenance and repairs on truck-mounted utility equipment, including service, boom, and bucket trucks, as well as forestry and other vocational equipment.

As a Field Service Technician, you’ll enjoy independence, variety, and the opportunity to work hands-on with some of the most critical equipment in the utility and construction industries.

CTOS Equips You for Success With:

• A company-provided utility service truck equipped with a crane, welder, and compressor

• Company phone, computer, and diagnostic tools

• You bring your mechanical expertise, your own tools, and a valid driver’s license (CDL preferred) we’ll take care of the rest

• Requirement to be a Registered Certified Mechanic (diesel, heavy on-road equipment) issued by the Hawaii DCCA

What You’ll Do

You will be the go-to expert in your region. Diagnose. Repair. Maintain. Highly specialized truck-mounted equipment. Work hands-on in the field. Most jobs are completed on customer sites, where your skills keep critical equipment running.

In this role, you'll:

• Perform inspections, preventive maintenance, and on‑site diagnostics

• Read and interpret manuals, schematics, and repair orders

• Use laptops and diagnostic software to identify issues

• Complete documentation accurately (repair orders, timecards, inspection forms)

• Communicate with customers and CTOS teams to minimize downtime

• Follow all safety, environmental, and regulatory requirements

• Participate in ongoing CTOS and manufacturer training

• Travel within and occasionally beyond your assigned territory

What Makes You a Great Fit

• You enjoy working independently and solving problems in real time

• You’re experienced with hydraulic, mechanical, and electrical systems

• You’re comfortable interacting with customers and working in the field

• You want a role where every day is different

Preferred Skills

• Electrical, hydraulics, welding, and schematic/blueprint reading

• Diagnostic software experience (QuickServe, DTNA, etc.)

• DOT, ANSI, and dielectric testing experience

Requirements

• High school diploma or GED

• 5 years of related experience (field or shop tech)

• Registered Certified Mechanic (diesel, on road heavy equipment) issued by: Hawaii DCCA

• Valid driver’s license (CDL Class B preferred)

• Must provide your own mechanic tools

Compensation & Benefits

• Competitive pay based on experience overtime opportunities

• 401(k) with employer match

• Medical, dental, vision, and life insurance

• Paid vacation, sick time, and holidays

• Short‑term & long‑term disability

• Employee Stock Purchase Plan

• Uniforms, safety boot & glasses allowance

• Tool discount programs

• Employee development and training investment

Custom Truck One Source is an Equal Opportunity Employer

We do not offer sponsorship—candidates must be authorized to work in the U.S. without the need for sponsorship.

You should be proficient in:

• DOT Medical Card
• Driver's License
• Heavy Equipment Repair
• Diesel & Heavy Equipment Systems
• Hydraulic Systems & Components
• Electrical Systems & Diagnostics (Heavy Equipment)
• Crane & Lifting Equipment Systems
• Aerial & Utility Equipment Systems
• DOT & Equipment Inspection Compliance