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

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.