Job Information
Custom Truck One Source Field Service Tech (Truck, Aerial, Hydraulics, Electrical) in Keaau, Hawaii
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 so you can hit the ground running
Competitive benefits , including paid time off, 401(k) match, uniforms, safety gear allowance, tool discounts, and more
You bring your mechanical expertise , your own tools , and a valid driver’s license (CDL preferred) we’ll take care of the rest
Opportunities to travel to other islands , including overnight stays as needed
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:
Troubleshoot, repair, and maintain
Bucket trucks / aerial devices
Digger derricks
Truck‑mounted cranes (LMI & CAN‑bus systems)
Hydraulic utility equipment & major components
Heavy‑ and light‑duty truck chassis, diesel, and electrical systems
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
Proficiency using documentation software and managing time effectively
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 committed to creating an inclusive workplace. All qualified applicants will receive consideration without regard to protected characteristics.
We do not offer sponsorship—candidates must be authorized to work in the U.S. without the need for sponsorship.