Field Service Diesel Mechanic - Decatur, GA

Field Service Technician / Mechanic

Our organization works with partner companies to source qualified talent for their open roles. The following position is available to Veterans, Transitioning Military, National Guard and Reserve Members, Military Spouses, Wounded Warriors, and their Caregivers. If you have the required skill set, education requirements, and experience, please follow the next steps.

Custom Truck One Source Atlanta is located at 334 Snapfinger Woods Drive, Decatur, GA 30035. CTOS is a leading manufacturer of Utility Trucks and Equipment with a rich history spanning 30 years. With 40 locations across the USA, over 2500 employees, and a rental fleet exceeding 10,000 trucks.

We are hiring a Field Service Technician / Mechanic with a background in truck mounted hydraulics, electrical wiring, diesel equipment. You will perform inspections, preventive maintenance, and repair of CTOS equipment.

We equip you for success with:

• Load King Cranes
• TERE Cranes
• Manitowoc Cranes
• Elliott Cranes
• National Cranes
• CTOS Equipment: Boom Trucks / Cranes, Bucket / Dump Trucks, Digger Derricks, Utility Trucks & more.

A company-provided utility service truck (crane, welder, compressor)

Company phone, computer, and diagnostic tools

Strong benefits, paid time off, 401(k) match, uniforms, safety gear allowance, tool discounts, and more

You bring your mechanical skills, your own tools, and a valid driver's license (CDL preferred), and we'll provide everything else you need to thrive.

What You'll Do

You'll be the go-to expert for customers across your regiondiagnosing, repairing, and maintaining highly specialized truck-mounted equipment. Most work is performed on customer sites, with occasional shop support.

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