Mobile Diesel Mechanic II

Cox Fleet•Westbury, NY

About The Position

Cox Fleet is hiring a Mobile Diesel Technician Level II to provide mobile maintenance and repair services for light-, medium-, and heavy-duty vehicles. The role performs licensed DOT inspections, preventive maintenance inspections, light and follow-up repairs, and mechanical, hydraulic, electrical, and electronic diagnostics. The technician may 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 position requires compliance with company policies and performance standards, as well as applicable safety, health, environmental, and federal regulations. The technician works in a mobile or field environment, manages their own daily schedule, maintains a company-issued service truck, and independently manages its parts inventory and equipment. Work includes documenting repairs and findings using a company-issued iOS device and the proprietary TRAIT application. The technician must communicate with customers, management, and support teams, and obtain parts and repair approvals as needed.

Requirements

  • High school diploma or GED and 3 years of experience in a related field; alternatively, a related degree or certification beyond a high school diploma/GED or 5 years of related experience.
  • Possess and supply a set of hand tools needed to perform the job.
  • 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 four months remaining may be submitted in lieu of a DOT physical.
  • Be at least 21 years old.
  • Hold a valid state-of-residence driver's license 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 extended periods, 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.
  • Judge relative distance and depth accurately.
  • 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 on truck equipment, including electrical, brake, and cooling systems; starters and alternators; fan clutches; engine electronics; diesel steering systems; gas and diesel engines; manual and automatic transmissions; clutches; and differentials.
  • Diagnose, adjust, and repair truck equipment, including electrical, brake, and cooling systems; starters and alternators; air-conditioning systems; fan clutches; engine electronics; diesel steering systems; gas and diesel 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 verify proper operation.
  • Identify problems and use sound judgment to assess information and 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 perform daily pre- and post-trip inspections.
  • Work effectively with clients and customers to assess needs, provide information or assistance, and resolve problems.
  • 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 using the company-issued iOS device and TRAIT application, including uploading pictures.
  • Complete DOT forms and other documentation accurately and in a timely manner.
  • Work with a high degree of independence and manage a daily schedule.
  • Maintain productivity and work within or close to Standard Repair Times.
  • Obtain parts from approved local and national vendors as needed.
  • Communicate with management and support teams by email or phone to obtain repair estimate approvals, purchase order numbers, or discuss repair order findings.
  • Perform work in compliance with company safety, health, and environmental policies and applicable OSHA, EPA, and DOT regulations.

Benefits

  • Weekly pay.
  • Safe driving and tech efficiency bonuses.
  • Safety boots and safety glasses reimbursement.
  • Extreme weather gear for cold and hot conditions.
  • Uniforms provided, with laundry service where available.
  • Company service truck may be taken home daily.
  • Company-provided tablet and cellphone.
  • Technical training and a dedicated career path.
  • Health, dental, and vision insurance beginning on the first day of employment.
  • 401(k) matching after 90 days: 100% match up to a 6% 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 groups, diversity groups, and company-paid volunteer hours.
  • Employee discounts on vehicle purchases, cellphone plans, ridesharing, home and rental insurance, wellness and fitness incentives, and other offerings.
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service