Mobile Diesel Mechanic II

Friday - Monday 10 pm - 8 am

Equal Opportunity Employer, Disabled/Veterans encouraged to apply

Headquartered in Indianapolis, Cox Fleet has grown to become one of the largest fleet maintenance companies in the country.

Cox Fleet is the leading provider of on-site mobile maintenance and repair services nationwide, offering mobile on-site fleet service for light medium, and heavy-duty trucks and trailers. Cox Fleet also services customers utilizing its 20+ nationwide service centers; each offering select services, such as accident repair, paint, refurbishment, and heavy mechanical repair.

Supported by a 24/7 in-house call‑center, Cox Fleet provides maintenance scheduled and unscheduled services to fleets anywhere, anytime.

The Mobile Diesel & Trailer Technician will be responsible for performing licensed DOT inspections, preventative maintenance inspections, light and follow‑up repairs, light mechanical/hydraulic/electrical and electronic diagnostics, and other duties as assigned. The technician can perform more advanced diagnostics and repairs under the supervision of a Sr Mobile Diesel Technician or higher and continues to learn additional advanced mechanical skills and diagnostic techniques.

A successful Technician complies with all company policies and achieves high level performance metrics.

• Perform scheduled preventative maintenance (PM), DOT inspections and follow‑up repairs on light, medium and heavy‑duty vehicles in a mobile/field environment.
• Perform minor adjustments and repairs on truck equipment such as electrical, brake, cooling systems, starters, alternators, fan clutches, engine electronics, diesel steering systems, engines, transmissions, clutches, and differentials.
• Repair trailer equipment and systems including aluminum and chem‑lite, brake systems, air lines, pumps, liftgates, and brake chambers.
• Diagnose, adjust, and repair truck equipment such as HVAC, air conditioning, electrical and mechanical systems.
• Diagnose and repair trailer equipment including welding, fabrication, and replacement of panels, body, and framework.
• Inspect, test, and diagnose malfunctions using handheld computers and pressure gauges.
• Road test vehicles to ensure proper function.
• Independently manage parts inventory and perform periodic reconciliation.
• Maintain and operate company‑issued service vehicle with safety checks and pre‑/post‑trip inspections.
• Work with clients to assess needs, provide assistance, and resolve problems.
• Manage concurrent tasks, prioritizing work and time allocations.
• Use hand tools, precision instruments, diesel tools, welding equipment, lift and jacks.
• Document work performed, parts used, and findings on Repair Orders (RO) via the TRAIT application.
• Accurately complete DOT forms and other documentation.
• Work independently and manage own daily schedule.
• Maintain a high level of productivity and meet Standard Repair Times.
• Obtain parts from approved vendors as necessary.
• Communicate with management and support team via email or phone for approvals and estimates.
• Perform all work in compliance with safety, health, environmental policies, and federal regulations (OSHA, EPA, DOT).
• Maintain company‑issued service truck and conduct safety checks and daily inspections.

• High School Diploma/GED plus 3 years of related experience (or alternative combinations such as a degree/certification + 5 years of experience).
• Possess hand tools necessary for job duties.
• Obtain ASE certification T8 (PMI) within 18 months.
• Pass DOT‑regulated background screening and DOT physical or provide a valid DOT medical card with at least 4 months remaining.
• Be at least 21 years old and hold a valid driver license.
• Maintain a clean driving record; 3‑year MVR review required.

• ASE T3 (Drivetrain)
• ASE T4 (Brakes)
• ASE T5 (Suspension)
• ASE T6 (Electrical and Electronic Systems)
• ASE T7 (HVAC)
• ASE 608/609 (Diesel)

• Understand implications of new information for problem‑solving and decision‑making.
• Physical ability to lift, bend, climb, stand, walk for long periods and perform moderate heavy labor.
• Communicate succinctly and engage…