Mobile Utility Fleet Diesel & Hydraulics Field Technician

Job Description

Job Description

Custom Truck One Source — Mobile Field Technician (Home-based in Louisiana 71303)

Step into a day where your expertise keeps essential infrastructure moving. As a mobile field technician with Custom Truck One Source (CTOS), you’ll start from home, roll out in a fully equipped service truck, and tackle complex troubleshooting across the Gulf Coast. CTOS is a 30+ year industry leader with 40+ locations, 2,500+ employees, and a 10,000+ unit fleet serving utility, telecom, rail, and construction customers.

Day in the life

• Hit the road across Louisiana, Mississippi, East Texas, and Western Alabama to diagnose and repair specialized utility equipment at customer sites.
• Work hands-on with bucket trucks, digger derricks, cranes, and service trucks—solving mechanical, electrical, diesel, and hydraulic issues.
• Perform inspections (including DOT) and dielectric testing on rental, customer, and company units.
• Use your company-issued laptop and credit card to manage work orders, parts, and travel logistics.
• Expect frequent overnight travel (50%–80%+) with significant assignments along the Gulf Coast in oil, gas, and utility areas.

What you’ll handle

• End-to-end troubleshooting, parts replacement, and field repairs on aerial, construction, and light/heavy-duty truck systems.
• Preventive maintenance, safety checks, and compliance documentation.
• Customer communication and coordination with the CTOS team to ensure uptime.

Where you’ll thrive

• Independent problem-solver who enjoys being the expert on-site, yet collaborates well with a broader support team.
• Comfortable working outdoors and on the move, adapting to varied field conditions.

Requirements

• Valid Driver’s License (required); CDL Class B preferred.
• Background with utility or heavy equipment such as Caterpillar, John Deere, Komatsu, and medium/heavy-duty trucks.
• Proven mechanical aptitude and strong field troubleshooting skills.

Tools and support from CTOS

• Company-provided, fully equipped service truck with crane, welder, and compressor.
• Company computer and credit card to streamline field operations.

Schedule and extras

• On-call rotation shared among 3–4 technicians (Monday–Sunday) with a $250 on-call bonus.
• Work mix: approximately 70% CTOS rental equipment and 30% third-party customer work.

Bring these strengths

• Heavy equipment repair
• Hydraulic systems expertise
• ASE Automobile & Light Truck certification testing familiarity
• Diesel and heavy equipment systems knowledge
• Electrical systems and diagnostics (heavy equipment)
• Aerial and utility equipment systems
• Current CDL license experience
• DOT and equipment inspection compliance

Equipment you’ll encounter

• Diesel Engines: Detroit Diesel, Cummins, PACCAR
• Diesel Vehicles: Ford
• Cranes: Konecranes, Terex, Manitowoc
• Boom Trucks: Terex, Altec, Elliott, National Crane, Load King, Manitex
• Digger Derricks: Terex, Altec, Elliott
• Boom Cranes: Link-Belt, Manitowoc
• Refuse Trucks and Service Trucks