Mobile Diesel/Trailer Technician

Department Paragon Fleet Maintenance Group Job Description JOB SUMMARY: The Mobile Diesel/Trailer Technician performs preventive maintenance, inspections, diagnostic testing, and general and complex repairs on company and contractor trucks, trailers, auxiliary power units, and refrigeration equipment. Supported equipment may include Peterbilt, Kenworth, Freightliner, Utility, Thermo King, and Carrier products. This role travels to or works at assigned service locations in the Laredo area and helps ensure equipment meets applicable safety and U.S. Department of Transportation requirements. Job Description Key Responsibilities Perform scheduled and non-routine repairs on company and contractor fleet equipment in accordance with applicable DOT and company standards. Diagnose and repair diesel engines, suspension and steering systems, air and hydraulic braking systems, electrical systems, lighting systems, and complex cooling systems. Diagnose and repair auxiliary power units, air-conditioning components, compressors, wheel seals, and water pumps. Perform trailer body repairs, including liners, landing gear, top rails, side rails, door posts, and H-frames. Diagnose and repair Thermo King and Carrier refrigeration systems and retrofit refrigeration units when assigned. Perform preventive maintenance on tractors and trailers, including oil changes, battery checks, lubrication, inspections, and related repairs. Replace and repair tires using applicable safety procedures. Document inspections, diagnostics, repairs, parts usage, and maintenance activities accurately and timely. Order parts, monitor inventory, and coordinate professionally with vendors and internal or external customers. Maintain a clean, organized, and safe service vehicle, shop, and work area; follow safety procedures and use required personal protective equipment. Perform other job-related duties as assigned. Qualifications Minimum Qualifications Demonstrated experience diagnosing and repairing heavy-duty diesel trucks and trailers in a commercial fleet, dealership, or similar maintenance environment. Experience with trailer mechanical and body repairs and commercial refrigeration systems, or an equivalent combination of relevant training, certifications, and work experience. Working knowledge of telematics systems and diagnostic software. Ability to use standard business software to complete work orders, communicate, and maintain records. Ability to read and understand safety procedures, operating manuals, service manuals, work orders, and technical documentation, and to communicate maintenance information effectively. Ability to perform basic math calculations used in maintenance and inventory activities. Valid driver license required because the position operates and moves vehicles or equipment as an essential job duty. Must possess, or be able to obtain, the basic tools required for assigned job functions. Preferred Qualifications Approximately five or more years of progressively responsible heavy-duty diesel and trailer maintenance experience. Thermo King or Carrier refrigeration repair experience or certification. Cummins or Detroit training or certification. Commercial vehicle inspection certification. Experience with vendor or customer relations and parts inventory management. Skills And Abilities Diesel engine diagnosis and repair, including familiarity with Cummins X15 and Detroit DD15 engines. Preventive maintenance and mechanical repair of tractors, trailers, braking systems, steering, suspension, electrical, lighting, and cooling systems. Trailer body repair, including liners, landing gear, rails, door posts, and H-frames. Electronic diagnostics, diagnostic software, and telematics systems. Safe and effective use of hand tools, power tools, shop equipment, and personal protective equipment. Organization, inventory control, documentation, customer service, and professional communication. Work Experience Relevant heavy-duty diesel and trailer maintenance e…

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