Sr. Mobile Diesel Mechanic

Sr. Mobile Diesel Technician

Cox Fleet is the leading provider of on‑site mobile maintenance and repair services nationwide, serving fleets across the country.

• 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 adjustment and repairs on various types of truck equipment including, but not limited to, electrical, brake, cooling systems, starters, alternators, fan clutches, engine electronics, diesel steering systems, engines (gas and diesel), transmissions (manual and automatic), clutches, and differentials.
• Diagnose, adjust, and repair various types of truck equipment including electrical, brake, cooling systems, starters, alternators, air‑conditioning systems, fan clutches, engine electronics, diesel steering systems, engines (gas and diesel), transmissions, clutches, and differentials.
• Inspect, test, and listen to defective equipment to diagnose malfunctions using test instruments such as handheld computers and pressure gauges.
• Road‑test vehicles to diagnose malfunctions and ensure proper operation.
• Identify problems, determine accuracy and relevance of information, use sound judgment to generate and evaluate alternatives.
• Independently manage parts inventory for company‑issued service truck and perform periodic reconciliation.
• Maintain and operate company‑issued service vehicle, conduct safety checks, and perform pre‑ and post‑trip inspections.
• Work with and listen effectively to clients and customers to assess their needs, provide information or assistance, resolve problems, or satisfy expectations.
• Manage concurrent assigned tasks and prioritize work activities and time allocations effectively.
• Use hand tools, precision instruments, diesel tools, welding equipment, lift, and jacks.
• Document work according to company standards and upload pictures, parts used, and findings on repair orders using the company‑issued iOS device and proprietary TRAIT application.
• Accurately complete DOT forms and all other documentation in a timely manner.
• Work independently and manage own daily schedule.
• Maintain high productivity and work within or close to most standard repair times.
• Obtain parts from approved local and national vendors as needed.
• Communicate with management and support team via e‑mail or phone to obtain approvals on repair estimates and retrieve purchase order numbers or discuss repair order findings.
• Perform all work in compliance with organizational safety, health and environmental policies and federal regulations (OSHA, EPA, DOT).
• Maintain company‑issued service truck, conduct safety checks, and daily pre/post‑trip inspections.

• High School Diploma/GED and 3 years’ experience in a related field. A different combination such as any level degree/certification beyond a HS diploma/GED or 5 years’ experience may also be accepted.
• At least 3 years of experience with refrigerated equipment.
• Possess and supply a set of hand tools necessary to perform required job duties.
• OEM training and certifications are preferred.
• Participate in and complete all company‑required training.
• This position follows regulations issued by the Department of Transportation’s (Use the "Apply for this Job" box below). Motor Carrier Safety Administration (FMCSA). Candidates must successfully complete and pass a DOT‑regulated pre‑employment background screening and DOT physical prior to employment.
• A current and valid DOT medical card with more than four (4) months remaining until its expiration may be submitted in lieu of a DOT physical. If the card has four (4) months or less of validity, a DOT physical will be required.
• Due to interstate operating authority commerce regulations, candidates must be at least 21 years or older.
• Safe drivers needed; valid driver’s license required. Candidates must hold a valid state‑of‑residence driver’s license, obtain and maintain a Driver Qualification File.

• ASE T8 (PMI) certification
• ASE 608/609 certification

• ASE T2 (Diesel Engines) certification
• ASE T3 (Drivetrain) certification
• ASE T4 (Brakes) certification
• ASE T5 (Suspension) certification
• ASE…