Sr Mobile Diesel Mechanic

Job Summary

Cox Fleet, headquartered in Indianapolis, is hiring a Senior Mobile Diesel Technician (Sr. Mobile Diesel Technician). The role involves performing licensed DOT inspections, preventive maintenance, light and advanced repairs, diagnostics, and various mechanical, hydraulic, and electrical tasks for light, medium, and heavy‑duty vehicles in a mobile/field environment.

• Perform scheduled preventive maintenance (PM), DOT inspections and follow up repairs on light, medium and heavy‑duty vehicles.
• Conduct minor adjustments and repairs on truck equipment such as electrical, brake, cooling, starter/alternator, fan clutches, engine electronics, steering systems, engines (gas and diesel), transmissions, clutches and differentials.
• Diagnose, adjust and repair various truck equipment using test instruments and handheld computers.
• Road test vehicles to confirm functionality and safety.
• Inspect, test, and listen to defective equipment to diagnose malfunctions.
• Identify problems, evaluate alternatives and determine solutions using sound judgment.
• Manage parts inventory, reconcile inventory and maintain the company‑issued service truck.
• Perform safety checks and pre/post‑trip inspections of the service vehicle.
• Listen effectively to clients, assess their needs and provide solutions.
• Prioritize concurrent tasks and manage time efficiently.
• Use hand tools, precision instruments, diesel tools, welding equipment, lift and jacks.
• Document repairs on Repair Orders (RO) using an iOS device and the TRAIT application.
• Accurately complete DOT forms and other required documentation.
• Operate independently, managing your daily schedule and maintaining high productivity.
• Obtain parts from approved local and national vendors as needed.
• Communicate with management and support team for repair estimate approvals and purchase order information.
• Perform all work in compliance with safety, health, environmental policies and federal regulations (OSHA, EPA, DOT).

• High School Diploma/GED; 5 years’ experience in a related field (or alternative combinations of education and experience as noted).
• Possess and supply a set of hand tools necessary for the job.
• Obtain ASE T8 (PMI) certification within 18 months.
• Obtain ASE 608/609 certification within 18 months.
• Pass DOT‑regulated pre‑employment background screening and DOT physical.
• Maintain a valid DOT medical card with at least four months until expiration (or meet DOT physical requirements).
• Be at least 21 years old and possess a valid driver’s license, meeting state Driver Qualification File requirements.
• Have a safe driving record.

• ASE T8 (PMI)
• ASE 608/609

• ASE T2 (Diesel Engines)
• ASE T3 (Drivetrain)
• ASE T4 (Brakes)
• ASE T5 (Suspension)
• ASE T6 (Electrical and Electronic Systems)
• ASE T7 (HVAC)
• ASE A8 (Engine Performance)
• ASE L1 (Advanced Engine Performance Specialist)
• ASE L2 (Electronic Diesel Engine Diagnosis Specialist)

• Understand implications of new information for problem‑solving and decision‑making.
• Ability to lift, bend, climb, stand, walk for long periods and perform moderately heavy labor.
• Perform repetitive tasks without fatigue.
• Communicate information succinctly and engage in effective two‑way communication.
• Determine appropriate tools and equipment needed for tasks.
• Judge distances accurately.
• Use logic and reasoning to evaluate alternative solutions.

USD 35.48 – 53.27 per hour (base rate may vary by location and qualifications). Eligible for additional commission and incentive programs.

Health, dental, vision insurance begins Day One.

401(k) matching starts after 90 days (100% match up to 6% with an additional 2% discretionary contribution).

Accrual of 200 hours (5‑weeks) of paid time off based on tenure.

Tuition assistance/reimbursement, adoption/surrogacy assistance, pet insurance, and multiple ERG/diversity groups with paid volunteer hours.

Employee discounts on vehicle purchases, cellphone plans, ride sharing, insurance, wellness/fitness incentives, and more.

Paid time off: minimum of 6.67 hours per month and seven paid holidays, plus bereavement, jury duty, volunteer, military, and parental leave.

EOE, including disability/veterans. Applicants must be authorized to work in the United States without current or future sponsorship.