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Sr. Mobile Diesel Technician

Job in Portsmouth, Rockingham County, New Hampshire, 00215, USA
Listing for: Fleet Services by Cox Automotive
Full Time position
Listed on 2026-02-07
Job specializations:
  • Transportation
Job Description & How to Apply Below

Join to apply for the Mobile Diesel Technician II role at Fleet Services by Cox Automotive

Fleet Services by Cox Automotive has grown to become one of the largest fleet maintenance companies in the country. We are 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.

The Mobile Diesel Technician Level II will be responsible for performing licensed DOT inspections, Preventative Maintenance inspections, light and follow-up repairs, light mechanical/hydraulic/electrical and electronic diagnostics, and other duties as assigned.

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 adjustment and repairs on various types of truck equipment.
  • Diagnose, adjust, and repair various types of truck equipment.
  • Inspect, test, and listen to defective equipment to diagnose malfunctions.
  • Road test vehicles to diagnose malfunctions and to ensure that they are working properly.
  • Identify problems, determine accuracy and relevance of information, using sound judgment to generate and evaluate alternatives.
  • Independently manage parts inventory and equipment provided on company-issued service truck.
  • Maintain and operate company-issued service vehicle, conduct safety checks, and pre-/post-trip inspections of vehicle.
  • Work with and listen effectively to clients and customers to assess their needs.
  • Manage concurrent assigned tasks, making effective judgments as to prioritizing work related activities and time allocations.
  • Use hand tools, precision instruments, as well as Diesel tools, welding equipment, lift and jacks.
  • Document according to company standards and upload pictures of work performed, parts used, and all findings observed on Repair Orders (RO) using company-issued iOS device and our proprietary TRAIT application.
REQUIREMENTS:
  • High School Diploma/GED and 3 years’ experience in a related field.
  • Possess and supply a set of hand tools necessary to perform required job duties.
  • Obtain Automotive Service Excellence (ASE) certification T8 (PMI) within eighteen (18) months.
  • This position follows regulations issued by the Department of Transportation’s (Use the "Apply for this Job" box below). Motor Carrier Safety Administration (FMCSA).
  • Candidate must be able to successfully complete and pass a DOT-regulated pre-employment background screening and DOT physical prior to employment.
  • Due to interstate operating authority commerce regulations, candidates must be at least 21 years or older.
  • Safe drivers needed; valid driver’s license required.
Benefits:
  • Health, dental, vision insurance starts DAY ONE of employment.
  • 401(k) matching starts after 90 days.
  • Accrue up to 200 hours (5-weeks) of Paid Time Off based on your tenure with the company.
  • Tuition Assistance/Reimbursement
  • Adoption/Surrogacy assistance
  • Pet Insurance
  • Multiple ERG, diversity groups, and company paid volunteer hours.
  • Employee discounts on new vehicle purchases, cellphone plans, ride sharing, home/rental insurance, wellness/fitness incentives and much more.
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