Field Service Technician - Utility Truck & Aerial Systems

Step into a day where your expertise keeps critical fleets moving

It’s sunrise on the Big Island or Oahu. You roll out in a fully outfitted utility service truck—crane swinging into place, welder and compressor ready, laptop booted—headed to a jobsite where a bucket truck needs to be back online before crews start. You diagnose, repair, and verify. A quick call with the customer, a note in the repair order, and you’re on to the next challenge. That’s a typical day as a Field Service Technician with Custom Truck One Source (CTOS), a 30-year industry leader with 40 locations across the U.S. and Canada.

What you’ll tackle

• Own on-site support for truck-mounted utility equipment—service, boom, and bucket trucks—as well as forestry and other vocational units.
• Perform inspections, preventive maintenance, and field diagnostics to minimize downtime.
• Interpret schematics, manuals, and repair orders to plan effective fixes.
• Use laptops and diagnostic software to pinpoint issues accurately.
• Document all work precisely: repair orders, timecards, inspection forms.
• Coordinate with customers and CTOS teams to schedule and complete work efficiently.
• Comply with all safety, environmental, DOT/ANSI, and regulatory standards.
• Travel within (and occasionally beyond) your assigned island territory.
• Engage in ongoing CTOS and OEM training to sharpen your craft.

What equips you for success

• Company-provided utility service truck equipped with a crane, welder, and compressor.
• Company phone, computer, and diagnostic tools.
• You bring mechanical know-how, your own tools, and a valid driver’s license (CDL preferred)—we’ll handle the rest.
• Registered Certified Mechanic (diesel, heavy on-road equipment) credential issued by the Hawaii DCCA.

Why you’ll thrive here

• Independence in the field with the backing of a seasoned team.
• Hands-on problem solving across hydraulic, mechanical, and electrical systems.
• Variety—no two days or job sites are the same.
• Customer-facing impact that keeps essential services running.

Preferred capabilities

• Electrical and hydraulic systems, welding, and blueprint/schematic reading.
• Experience with diagnostic software (e.g., QuickServe, DTNA).
• Background with DOT, ANSI, and dielectric testing.

Minimum requirements

• High school diploma or GED.
• 5 years of relevant experience as a field or shop technician.
• Registered Certified Mechanic (diesel, on-road heavy equipment) issued by Hawaii DCCA.
• Valid driver’s license; CDL Class B preferred.
• Personal set of mechanic tools.

Compensation and benefits

• Competitive pay based on experience, with overtime opportunities.
• 401(k) with employer match.
• Medical, dental, vision, and life insurance.
• Paid vacation, sick time, and holidays.
• Short‑term and long‑term disability.
• Employee Stock Purchase Plan.
• Uniforms plus safety boot and glasses allowance.
• Tool discount programs.
• Ongoing 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