About The Position

Cox Fleet is hiring for a Mobile Diesel Technician Level II or Senior Mobile Diesel Technician (Level III) to perform maintenance, DOT inspections, diagnostics, and repairs on light-, medium-, and heavy-duty vehicles in a mobile/field environment. Level II technicians perform preventative maintenance, light and follow-up repairs, and increasingly advanced diagnostics under the supervision of a senior technician or higher. Senior technicians perform advanced repairs and diagnostics, triage complicated repairs, and serve as jobsite leads and customer consultants. The position involves working independently, managing a daily schedule, maintaining a company-issued service truck and its parts inventory, documenting work and findings, and communicating with customers, management, and support teams. Work must comply with company safety, health, and environmental policies and applicable OSHA, EPA, and DOT regulations. The schedule is Sunday through Wednesday, 7 a.m. to 5 p.m.

Requirements

  • For Level II: High school diploma or GED and 3 years of related experience; alternatively, a related degree or certification beyond high school/GED, or 5 years of related experience.
  • For Senior Level III: High school diploma or GED and 5 years of related experience; alternatively, a related degree or certification beyond high school/GED with 3 years of related experience, or 7 years of related experience.
  • Senior Level III candidates must have at least 3 years of experience with refrigerated equipment.
  • Possess and supply the hand tools necessary to perform the job.
  • Obtain ASE T8 (PMI) certification within 18 months.
  • Senior Level III must obtain ASE 608/609 certification within 18 months.
  • Complete a DOT-regulated pre-employment background screening and DOT physical, unless a valid DOT medical card with more than four months remaining is submitted in lieu of the physical.
  • Be at least 21 years old due to interstate operating authority regulations.
  • Have a valid driver’s license from the state of residence and be able to obtain and maintain a Driver Qualification File.
  • Be able to lift, bend, climb, stand, and walk for long periods; perform moderately heavy labor; and exert oneself over extended periods, including repetitive tasks.
  • Communicate information succinctly and in an organized manner, and engage in effective two-way communication.
  • Determine the appropriate tools and equipment for a task and accurately judge distances.
  • Use logic and reasoning to assess alternative solutions, conclusions, and approaches.

Nice To Haves

  • Level II: ASE T3 (Drivetrain), T4 (Brakes), T5 (Suspension), T6 (Electrical and Electronic Systems), T7 (HVAC), and ASE 608/609 certifications.
  • Senior Level III: OEM training and certifications.
  • Senior Level III: ASE T2 (Diesel Engines), T3 (Drivetrain), T4 (Brakes), T5 (Suspension), T6 (Electrical and Electronic Systems), T7 (HVAC), A8 (Engine Performance), L1 (Advanced Engine Performance Specialist), and L2 (Electronic Diesel Engine Diagnosis Specialist) certifications.

Responsibilities

  • Perform scheduled preventative maintenance, DOT inspections, and follow-up repairs on light-, medium-, and heavy-duty vehicles in a mobile/field environment.
  • Adjust, repair, diagnose, and troubleshoot vehicle systems and equipment, including electrical, brake, cooling, air-conditioning, engine, steering, transmission, clutch, and differential systems.
  • Inspect, test, and listen to defective equipment to diagnose malfunctions using instruments such as handheld computers and pressure gauges.
  • Road-test vehicles to diagnose malfunctions and confirm proper operation.
  • Identify problems and use sound judgment and logic to evaluate information and alternatives.
  • Manage parts inventory and equipment on the company-issued service truck, including periodic reconciliation.
  • Operate and maintain the company-issued service vehicle and perform safety checks and pre- and post-trip inspections.
  • Communicate with customers to assess needs, provide information or assistance, and resolve concerns.
  • Prioritize concurrent tasks and manage work activities and time effectively.
  • Use hand tools, precision instruments, diesel tools, welding equipment, lifts, and jacks.
  • Document work, parts used, and findings on repair orders, including uploading pictures using a company-issued iOS device and the TRAIT application.
  • Complete DOT forms and other documentation accurately and promptly.
  • Work independently and manage a daily schedule while maintaining productivity within or close to standard repair times.
  • Obtain repair parts from approved local and national vendors.
  • Communicate with management and support teams by email or phone regarding estimate approvals, purchase orders, and repair-order findings.
  • Perform work in compliance with company safety, health, and environmental policies and OSHA, EPA, and DOT regulations.
  • For senior technicians, provide advanced diagnostic and repair support, triage complicated repairs, and act as a lead and customer consultant at jobsites.

Benefits

  • Weekly pay, issued every Friday.
  • Safe-driving and technician-efficiency bonuses.
  • Reimbursement for safety boots and safety glasses.
  • Cold- and hot-weather gear.
  • Uniforms with laundry service where available.
  • Company service truck may be taken home daily.
  • Company-provided tablet and cellphone.
  • Technical training and a career path with opportunities for internal promotion.
  • Health, dental, and vision insurance beginning on the first day of employment.
  • 401(k) matching after 90 days: 100% match up to 6% of contributions, plus an additional 2% discretionary company contribution.
  • Accrual of up to 200 hours (five weeks) of paid time off based on tenure.
  • Tuition assistance or reimbursement.
  • Adoption and surrogacy assistance.
  • Pet insurance.
  • Employee resource and diversity groups, and company-paid volunteer hours.
  • Employee discounts on vehicle purchases, cellphone plans, ridesharing, home and rental insurance, and other offerings.
  • Wellness and fitness incentives.
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service