Field Service Diesel Mechanic - Decatur, GA

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Unless specifically stated otherwise, this role is "On-Site" at the location detailed in the job post.


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.

Hiring 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 TEREX 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 region—diagnosing, 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

Requirements

High school diploma or GED
5+ years of related experience (field or shop tech)
Valid driver’s license (CDL Class B preferred)
Must provide your own mechanic tools
Travel 25 -50% plus
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

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