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Sr Mobile Diesel Mechanic

Job in Annapolis, Anne Arundel County, Maryland, 21403, USA
Listing for: Fleet Services by Cox Automotive
Full Time position
Listed on 2026-01-05
Job specializations:
  • Trades / Skilled Labor
    Heavy Equipment Mechanic, Diesel Mechanic
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below

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Fleet Services – A Cox Automotive Company keeps your fleet moving!

Headquartered in Indianapolis, Fleet Services by Cox Automotive has grown to become one of the largest fleet maintenance companies in the country. Fleet Services is the leading provider of on‑site mobile maintenance and repair services nationwide, offering mobile on‑site fleet service for light, medium, and heavy‑duty trucks and trailers. Fleet Services also services customers utilizing its 50+ nationwide service centers, each offering accident repair, painting, refurbishment, and heavy mechanical repair.

We are supported by a 24/7 in‑house call‑center and provide scheduled maintenance services and unscheduled services to fleets anywhere, anytime.

Position

Sr. Mobile Diesel Technician

The Sr. Mobile Diesel Technician will be responsible for performing licensed DOT inspections, preventative maintenance inspections, light and advanced repairs, advanced mechanical, hydraulic, electrical and electronic diagnostics, and other duties as assigned. Heavily relied upon for advanced diagnostics and triage of complicated repairs by Mobile Diesel Technician I/II, the role is considered the Lead on jobsites by customers and technicians. Functions as a consultant on the customer's behalf.

A successful Sr. Mobile Diesel Technician complies with all company policies and achieves high level performance metrics.

DUTIES
  • Perform scheduled preventative maintenance, DOT inspections, and follow‑up repairs on light, medium and heavy‑duty vehicles in a mobile/field environment.
  • Perform minor adjustments and repairs on various types of truck equipment including 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 (manual and automatic), 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 they are working properly.
  • Identify problems and generate and evaluate alternatives using sound judgment.
  • Independently manage parts inventory and equipment on company‑issued service truck, performing periodic reconciliation.
  • Maintain and operate company‑issued service vehicle, conducting safety checks and pre‑/post‑trip inspections.
  • Work with and listen effectively to clients and customers to assess their needs, provide information or assistance, resolve problems, and satisfy expectations.
  • Manage concurrent assigned tasks, prioritizing work activities and time allocation.
  • Use hand tools, precision instruments, diesel tools, welding equipment, lift and jacks.
  • Document work according to company standards, uploading pictures of work performed, parts used, and findings observed on Repair Orders using company‑issued iOS device and the proprietary TRAIT application.
  • Accurately complete DOT forms and all other documentation in a timely fashion.
  • Work with a high degree of independence and manage own daily schedule.
  • Maintain a high level of productivity and work within or close to most standard repair times.
  • Obtain parts from approved local and national vendors as necessary for repairs.
  • Communicate with management and support team via email or phone to obtain approvals on repair estimates, retrieve purchase order numbers, and discuss RO findings and notes.
  • Perform all work in compliance with organizational safety, health and environmental policies, and federal regulations, including OSHA, EPA, and DOT.
  • Maintain company‑issued service truck, conducting safety…
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