About The Position

Cox Fleet is hiring a Mobile Diesel Technician Level II to provide on-site maintenance and repair for light-, medium-, and heavy-duty vehicles in a mobile/field environment. The role performs DOT inspections, preventive maintenance, follow-up repairs, and diagnostics. The technician can perform more advanced diagnostics and repairs under the supervision of a Senior Mobile Diesel Technician or higher, while continuing to develop advanced mechanical skills and diagnostic techniques. The successful candidate follows company policies and safety requirements and meets performance expectations. The technician works with a high degree of independence, manages a daily schedule and parts inventory, maintains and operates a company-issued service truck, and documents work using a company-issued iOS device and the TRAIT application. The position requires customer communication, coordination with management and support teams, and compliance with applicable safety, health, environmental, OSHA, EPA, and DOT regulations.

Requirements

  • High school diploma or GED and 3 years of experience in a related field; alternatively, a related degree or certification beyond high school/GED, or 5 years of related experience.
  • Possess and supply the hand tools necessary to perform the job duties.
  • Obtain ASE T8 (PMI) certification within 18 months.
  • Successfully complete and pass a DOT-regulated pre-employment background screening and DOT physical before employment; a current DOT medical card with more than 4 months remaining may be submitted in lieu of the physical.
  • Be at least 21 years old due to interstate operating authority commerce regulations.
  • Hold a valid driver’s license from the state of residence and be able to obtain and maintain a Driver Qualification File.
  • Ability to lift, bend, climb, stand, and walk for long periods and perform moderately heavy labor.
  • Ability to exert oneself physically over long periods without tiring, including performing repetitive tasks.
  • Communicate information succinctly and in an organized manner and engage in effective two-way communication.
  • Determine the tools and equipment needed for a task.
  • Accurately judge relative distances between objects.
  • Use logic and reasoning to evaluate alternative solutions, conclusions, or approaches to problems.
  • Understand how new information affects current and future problem-solving and decision-making.

Nice To Haves

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

Responsibilities

  • Perform scheduled preventive maintenance, DOT inspections, and follow-up repairs on light-, medium-, and heavy-duty vehicles in a mobile or field environment.
  • Perform minor adjustments and repairs to truck equipment, including electrical, brake, and cooling systems; starters and alternators; fan clutches; engine electronics; steering systems; gas and diesel engines; transmissions; clutches; and differentials.
  • Diagnose, adjust, and repair truck equipment, including electrical, brake, cooling, and air-conditioning systems; starters and alternators; fan clutches; engine electronics; steering systems; engines; transmissions; clutches; and differentials.
  • 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, assess the accuracy and relevance of information, and use judgment to evaluate alternatives.
  • Independently manage parts inventory and equipment on the company-issued service truck and perform periodic reconciliation.
  • Maintain and operate the company-issued service vehicle, conduct safety checks, and complete pre- and post-trip inspections.
  • Work effectively with clients and customers to assess needs, provide information or assistance, resolve problems, and meet expectations.
  • Manage concurrent tasks and prioritize work activities and time allocations.
  • Use hand tools, precision instruments, diesel tools, welding equipment, lifts, and jacks.
  • Document work performed, parts used, and findings on repair orders, upload pictures, and use the company-issued iOS device and TRAIT application.
  • Complete DOT forms and other documentation accurately and on time.
  • Manage an independent daily schedule and maintain productivity within or close to standard repair times.
  • Obtain parts from approved local and national vendors as needed.
  • Communicate with management and the support team by email or phone to obtain estimate approvals, retrieve purchase order numbers, and discuss repair-order findings.
  • Perform work in compliance with organizational safety, health, and environmental policies and applicable OSHA, EPA, and DOT regulations.

Benefits

  • Weekly pay every Friday.
  • Safe-driving and technician-efficiency bonuses.
  • Safety boots and safety glasses reimbursement.
  • Cold- and hot-weather gear.
  • Uniforms provided with laundry service where available.
  • Company service truck may be taken home daily.
  • Tablet and company cellphone provided.
  • Technical training and a dedicated career path, with more than 50% of front-line managers promoted from within.
  • Health, dental, and vision insurance beginning on the first day of employment.
  • 401(k) matching after 90 days: 100% match up to 6% employee contribution, plus an additional 2% discretionary company contribution.
  • Accrue up to 200 hours (5 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 new vehicle purchases, cellphone plans, ridesharing, home or rental insurance, and wellness or fitness incentives.
  • $5,000 new-hire bonus.
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service