Mobile Diesel Mechanic - Leesburg, VA; Hagerstown, MD; Salem, VA; Sterling, VA; Warrenton, VA; Frede

Job Description

Job Description

Description:

POSITION SUMMARY

Perform mechanical repairs on commercial vehicles using technical expertise, diagnostic skills, and teamwork. Deliver professional, timely, and safe service to customers while maintaining a clean work area, completing accurate documentation, and following company procedures. Demonstrate professionalism, dependability, safety, and quality in all aspects of the job. Be safe and take pride in your work!

• Diagnose and Repair Diesel Vehicles and Equipment
• Perform diagnostics on engines, transmissions, electrical systems, brakes, hydraulics, and towing equipment.
• Achieve at least 90% first-time repair accuracy and maintain an average diagnostic completion time within established company standards.
• Conduct Preventive Maintenance
• Complete scheduled inspections, fluid services, lubrication, and component replacements.
• Complete 100% of assigned preventive maintenance services by due date and reduce unscheduled breakdowns by established targets.
• Respond to Roadside Service Calls
• Maintain average response times within company standards and achieve high customer satisfaction ratings.
• Inspect and Maintain Tow Trucks and Recovery Equipment
• Ensure tow trucks, winches, chains, straps, hydraulic systems, and related equipment remain operational and compliant.
• Maintain equipment readiness rate of 95% or greater and complete required inspections on schedule.
• Perform Safe Vehicle Recovery and Towing Operations
• Secure, tow, and recover disabled vehicles according to company procedures and safety regulations.
• Zero preventable towing incidents and 100% compliance with safety procedures.
• Troubleshoot Electrical and Electronic Systems
• Diagnose and repair vehicle wiring, lighting, charging systems, sensors, and onboard diagnostic systems.
• Complete repairs with less than 5% rework rate.
• Document Repairs and Service Activities
• Accurately record labor, parts used, inspections, and repair recommendations.
• Submit complete and accurate work orders within 24 hours of service completion.
• Manage Parts and Inventory
• Maintain service truck inventory and coordinate parts procurement.
• Maintain inventory accuracy of 95% or greater and minimize service delays due to unavailable parts.
• Follow Safety and Regulatory Requirements
• Comply with DOT, OSHA, environmental, and company safety standards.
• Maintain zero safety violations and complete all required training by assigned deadlines.
• Provide Customer Service
• Communicate repair findings, recommendations, and service status professionally.
• Maintain customer satisfaction scores of 90% or higher and resolve customer concerns promptly.
• Maintain Availability for Emergency and After-Hours Service
• Participate in on-call rotation and respond to emergency towing and repair requests.
• Measured Outcome: Meet attendance requirements and maintain on-call response compliance of 95% or greater.
• Maintain Tools and Mobile Service Vehicle
• Keep service vehicle clean, organized, and stocked with necessary tools and supplies.
• Measured Outcome: Pass monthly vehicle and tool inspections with no significant deficiencies.

COMPETENCIES

Skilled diesel mechanic with expertise in diagnosing, repairing, and maintaining commercial vehicles and equipment. Demonstrates strong mechanical aptitude, troubleshooting ability, and proficiency with diagnostic software, engine codes, and repair tools. Committed to delivering safe, high-quality workmanship while responding effectively to roadside emergencies and time-sensitive repairs. Exhibits professionalism, dependability, sound judgment, and strong customer service skills through clear communication, teamwork, and a commitment to company standards. Maintains compliance with safety regulations and continuously applies industry knowledge to maximize vehicle performance, reliability, and customer satisfaction.

QUALIFICATIONS

Minimum Qualifications

• High school diploma or GED preferred. 
• Minimum of 2 years of diesel mechanic experience; towing or heavy-duty truck repair experience preferred. 
• DCJS certification requirements must be met based on location.
• Strong knowledge of diesel engines, preferably Cummins, transmissions, brakes, suspensions, steering, fuel systems, air systems, A/C, tires, hydraulic systems, and DEF systems. 
• Proficiency in diagnosing and troubleshooting mechanical, electrical, and electronic vehicle systems using diagnostic software and tools. 
• Ability to read and interpret repair manuals, technical documents, schematics, and work orders. 
• Basic computer skills with the ability to use diagnostic and fleet management systems. 
• Welding and fabrication experience preferred. 
• Ability to perform roadside and emergency repairs in various weather and field conditions. 
• Must possess and maintain a complete set of tools necessary to perform assigned duties. 
• Strong problem-solving, decision-making, and critical-thinking skills. 
• Ability to work independently while maintaining effective communication and teamwork. 
• Excellent customer service and professional communication skills. 
• Demonstrated commitment to safety, quality workmanship, and company standards. 
• Valid driver's license required; CDL preferred or ability to obtain one, if required. 
• Ability to lift, carry, push, and pull up to 75 pounds and perform physical tasks including standing, bending, kneeling, climbing, and working in confined spaces. 
• Reliable attendance, punctuality, and flexibility to work overtime, weekends, on-call shifts, or emergency response assignments as needed.

PHYSICAL REQUIREMENTS

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

While performing the duties of this job, the employee is regularly required to use hands to fingers, handle or feel and talk to or hear. The employee is frequently required to stand; walk; reach with hands and arms and stoop, kneel, crouch or crawl. The employee must be able to perform significant amount of driving, bending, lifting, twisting, climb or lance, and listen to and respond to radio and telephone communications.

This job requires the FULL USE OF the following body parts AT ALL TIME:

Both hands                               

Both arms                          

Both eyes   

The back    

Both legs   

Both Knees    

Both hips   

While performing the duties of this job, the employee is regularly exposed to moving mechanical parts. The employee is infrequently exposed to outside weather conditions. The employee is occasionally exposed to fumes. The noise level in the work environment is usually moderate.

WORK ENVIRONMENT

The Diesel Mechanic works in both shop and field environments, performing maintenance and repairs on commercial trucks, heavy-duty vehicles, and towing equipment. Work is performed indoors and outdoors in varying weather conditions, including extreme heat, cold, rain, and humidity. The position requires frequent exposure to moving mechanical parts, diesel fuel, lubricants, hydraulic fluids, fumes, noise, vibration, and other shop-related hazards.

Mechanics regularly operate hand tools, power tools, diagnostic equipment, welding equipment, lifts, jacks, and other repair machinery. The role requires standing for extended periods; walking, bending, kneeling, crouching, reaching, climbing, and working in confined spaces; and lifting or moving heavy equipment and vehicle components.

This position may require responding to roadside breakdowns and emergency service calls at various locations, often under time-sensitive conditions and in active traffic environments. Employees must consistently follow safety procedures, wear required personal protective equipment (PPE), and maintain a clean and organized work area.

Work Environment Expectations:

• Work in shop, yard, and roadside service settings.
• Exposure to varying weather, noise levels, dust, fumes, and mechanical hazards.
• Frequent lifting, carrying, pushing, and pulling of up to 75 pounds.
• Ability to work flexible schedules, including overtime, weekends, holidays, and on-call assignments as business needs require.
• Adherence to all company safety policies, OSHA requirements, and DOT regulations.
• Commitment to maintaining a safe, professional, and customer-focused work environment.

PERFORMANCE EXPECTATIONS

• Diagnose, troubleshoot, repair, and maintain diesel-powered commercial vehicles and towing equipment. 
• Complete repairs accurately, safely, and efficiently while meeting quality standards. 
• Maintain a high first-time repair rate and minimize repeat repairs. 
• Perform preventive maintenance and inspections according to company standards. 
• Respond promptly to roadside service and emergency breakdown calls. 
• Complete work orders, inspection reports, and repair documentation accurately and on time. 
• Follow all company standards and policies, including work punctuality and attendance.