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Mobile Diesel Mechanic II Wed - Sun - Day Shift

Job in O'Fallon, St. Charles County, Missouri, 63366, USA
Listing for: CAI Cox Automotive Corp Svcs., LLC
Full Time position
Listed on 2026-07-30
Job specializations:
  • Trades / Skilled Labor
    Diesel Mechanic, Heavy Equipment Mechanic
Salary/Wage Range or Industry Benchmark: 26.73 - 40.1 USD Hourly USD 26.73 40.10 HOUR
Job Description & How to Apply Below

Job Title

Mobile Diesel Technician Level II – DOT Management Level – Individual Contributor – Flexible work (remote possible but must reside within the specified city, state, or region). Travel is 100% of the time. Shift: Day.

Compensation

Hourly base pay rate $26.73 – $40.10 per hour. Additional compensation may include commission and incentive programs.

Job Description

The Mobile Diesel Technician Level II performs licensed DOT inspections, preventative maintenance inspections, light and follow‑up repairs, electrical/hydraulic/electrical and electronic diagnostics, and other duties as assigned. Must learn advanced mechanical skills and diagnostic techniques under supervision and comply with company performance metrics.

Duties
  • 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 adjustments and repairs on truck equipment, including electrical, brake, cooling, starter, alternator, fan clutches, engine electronics, diesel steering, engines (gas and diesel), transmissions, clutches, and differentials.
  • Diagnose, adjust, and repair various truck equipment components.
  • Inspect, test, and evaluate defective equipment using handheld computers and pressure gauges; road‑test vehicles to confirm proper operation.
  • Identify problems, determine relevance of information, and evaluate alternatives using sound judgment.
  • Independently manage parts inventory on the company‑issued service truck and perform periodic reconciliation.
  • Maintain and operate the company‑issued service vehicle, conduct safety checks, and perform pre‑ and post‑trip inspections.
  • Communicate effectively with clients and customers to assess needs, provide information, resolve problems, and meet expectations.
  • Manage concurrent tasks, prioritizing work activities and time allocations.
  • Use hand tools, precision instruments, diesel tools, welding equipment, lifts, and jacks.
  • Document all work on Repair Orders (RO) using the company iOS device and TRAIT application, including photos of work performed and parts used.
  • Accurately complete DOT forms and other required documentation in a timely manner.
  • Work independently, managing own daily schedule and maintaining productivity within or close to standard repair times.
Requirements
  • High School Diploma/GED and 3 years’ experience in a related field; or other combinations such as a degree or certification beyond HS diploma and 5 years of experience.
  • Possess a complete set of hand tools necessary for duties.
  • Obtain Automotive Service Excellence (ASE) T8 (PMI) certification within 18 months.
  • Pass a DOT‑regulated pre‑employment background screening and DOT physical, or provide a valid DOT medical card with more than four months remaining.
  • Be at least 21 years of age, possess a valid driver’s license, and maintain a Driver Qualification File.
Required Certifications (to be obtained within 18 months)
  • ASE T8 (PMI)
  • ASE T3 (Drivetrain)
  • ASE T4 (Brakes)
  • ASE T5 (Suspension)
  • ASE T6 (Electrical and Electronic Systems)
  • ASE T7 (HVAC)
  • ASE 608/609 (Diesel)
Skills & Abilities

Understanding of new information implications for decision‑making; physical ability to lift, bend, climb, stand, and walk for long periods; ability to perform moderately heavy labor; excellent communication and two‑way interaction; ability to choose appropriate tools and equipment; spatial perception; logical reasoning to evaluate alternatives.

Why Cox Fleet?
  • Weekly pay – paid every Friday.
  • Safe driving & tech efficiency bonuses.
  • Reimbursement for safety boots & glasses; extreme weather gear.
  • Uniforms with laundry service where available.
  • Take the service truck home daily (no gas cost).
  • Tablet & company cellphone provided.
  • Technical training to advance your career.
  • Dedicated career path – over 50% of front‑line managers promoted from within.
Benefits
  • Health, dental, and vision insurance starting Day One.
  • 401(k) matching after 90 days (100% match up to 6%; company contributes an additional 2%).
  • Earn up to 200 hours of Paid Time Off based on tenure; 6.67 hours of PTO each month; 7 paid holidays.
  • Additional paid time off: bereavement, voting, jury duty, volunteer, military,…
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