Sr Mobile Diesel Mechanic
CAI Cox Automotive Corp Svcs., LLC
Job Title Sr Mobile Diesel Technician – DOT Management Level Company Cox Automotive (Cox Fleet) Job Summary Perform DOT inspections, preventive maintenance and advanced repairs on light, medium and heavy‑duty trucks and trailers in a mobile/field environment. Act as the lead technician on job sites, providing expert diagnostics, troubleshooting, and client consultation. Responsibilities Schedule and conduct preventative maintenance (PM) and DOT inspections for a range of vehicles. Perform minor adjustments and repairs on electronic, hydraulic, electrical, and mechanical systems including brakes, cooling, engine electronics, diesel steering, transmissions, clutches, and differentials. Diagnose and resolve equipment malfunctions using handheld computers, pressure gauges, and other diagnostic instruments. Road‑test vehicles to verify proper operation after repairs. Manage parts inventory, obtain necessary parts from approved vendors, and reconcile supplies. Maintain company‑issued service vehicle, perform safety checks, and conduct pre‑ and post‑trip inspections. Engage with clients and customers to assess needs, provide information, and resolve issues. Prioritize concurrent tasks, allocate time efficiently, and maintain high productivity. Use hand tools, precision instruments, welding equipment, lifts, and jacks in accordance with safety protocols. Document work, upload photos, and fill out DOT and internal forms using the company iOS device and TRAIT application. Conform to OSHA, EPA, DOT, and internal safety, health, and environmental policies. Requirements High school diploma or GED plus at least 3 years of experience with heavy‑duty vehicles. Alternate candidates may have a related degree or 5 years of experience. Minimum of 3 years’ experience with refrigerated equipment. Own a set of hand tools required for job duties. Must complete all company‑required training. Pass DOT‑regulated pre‑employment background screening and physical exam; a DOT medical card with more than four months validity may substitute the physical. Must be 21 years or older, hold a valid driver’s license in the state of residence, and maintain a Driver Qualification File. Certifications (must have or obtain within 18 months) ASE T8 (PMI)
ASE 608/609
ASE T2 (Diesel Engines) ASE T3 (Drivetrain) ASE T4 (Brakes) ASE T5 (Suspension) ASE T6 (Electrical & Electronic Systems)ASE T7 (HVAC)
ASE A8 (Engine Performance) ASE L1 (Advanced Engine Performance Specialist) ASE L2 (Electronic Diesel Engine Diagnosis Specialist) Skills & Abilities Strong analytical and problem‑solving abilities. Ability to lift, bend, climb, and stand for extended periods; perform moderate heavy labor. Excellent written and verbal communication; concise and organized. Effective two‑way communication with clients and team members. Judicious use of tool and equipment selection. Spatial awareness and ability to judge distances. Logical reasoning to evaluate alternatives and make informed decisions. Benefits Health, dental and vision insurance starting Day1. 401(k) matching after 90 days: 100% match up to 6% plus company discretionary contribution. Paid time off: 6.67 hours each month, additional holidays, and leave for bereavement, jury duty, volunteer work, military, parental, and other statutory entitlements. Tuition assistance and reimbursement. Pet insurance. Safety gear reimbursement and provision of safety boots, glasses, and extreme‑weather gear. Opportunity to take the service truck home daily. Tablet and company cellphone provided for work. Comprehensive technical training and career advancement path. EEO Statement Cox is an Equal Employment Opportunity employer. All qualified applicants will receive consideration for employment without regard to age, race, color, religion or creed, national origin or ancestry, sex, sexual orientation, gender identity, disability, veteran status, genetic information, ethnicity, citizenship, or any other characteristic protected by law. Applicants must be authorized to work in the U.S. without sponsorship. Application Deadline 06/29/2026 #J-18808-Ljbffr CAI Cox Automotive Corp Svcs., LLC- ...Sr Mobile Diesel Tech - Dot Cox Fleet keeps your fleet moving! Headquartered in Indianapolis, Cox Fleet has grown to become one of... ...offering accident repair, painting, refurbishment, and heavy mechanical repair. We are supported by a 24/7 in-house call-center and...SeniorWeekly payCurrently hiringLocal area
$35.48 - $53.27 per hour
...Fleet is the leading provider of on-site mobile maintenance and repair services... ...repair, painting, refurbishment, and heavy mechanical repair. We are supported by a 24/7 in-house... .... Cox Fleet is currently hiring a Sr. Mobile Diesel Technician. Responsibilities Perform...SeniorHourly payWeekly payCurrently hiringLocal area- ...Job Description Job Description Mile High Mobile Truck Repair is seeking a highly skilled Diesel Mechanic to join our team. This is a dynamic field service role responsible for performing essential repairs and maintenance on heavy-duty diesel engines and related systems...SuggestedFull timeLocal areaFlexible hours
- ...Job Description Job Description Stuck in a routine at work? Mile High Mobile Truck Repair is a small growing mobile repair company looking for a mobile diesel mechanic to operate independently in a new service truck. Because we work on a wide variety of equipment...SuggestedFull timeLocal area
- ...Job Description We are looking for a skilled and reliable Mobile Diesel Mechanic ! This position is field-based and requires the ability to perform diagnostics, maintenance, and repairs on diesel equipment and vehicles at customer locations or roadside. The ideal...Suggested
$18 - $19 per hour
...TravelCenters of America Mobile Maintenance Technician There's never been a better time to join TravelCenters of America! For more... ...the employee will also be exposed to fumes and particles, moving mechanical parts and vibration. The noise level in the work environment...Hourly payContract workLocal areaFlexible hoursNight shift- ...Description Responsibilities Are you an Experienced Mobile Diesel Technician looking for an opportunity to work for a leader in... ...not required. ~ Medical card as required by the FMVS. ~ Mechanical aptitude and technical ability is a must. ~ Peterbilt, International...Full time
- ...Job Details Job Title Mobile Diesel Service Technician / Mechanic Business Function Service Branch Name MHC Kenworth-Denver Date 01-26-2026 Address 7007 Sandown Road City...Temporary workFlexible hours
$35.48 - $53.27 per hour
Cox Automotive Inc. is hiring a Sr. Mobile Diesel Technician in Denver, Colorado. This role involves conducting mobile maintenance on light, medium, and heavy-duty vehicles, requiring 3 years of relevant experience and a valid driver’s license. The ideal candidate will...SeniorHourly pay- Confidential in Commerce City, CO is seeking a skilled technician for diagnosing and repairing medium to heavy-duty trucks and trailers. This role requires extensive experience in vehicle repair and compliance with trucking regulations. Benefits include competitive pay,...SeniorRelocation package
- ...Are you fascinated by the workings of vehicles and take pride in ensuring they perform at their best? If you possess a keen mechanical aptitude and a penchant for problem-solving, this role could be perfect for you. Embrace the opportunity to maintain and improve...
- TravelCenters of America is hiring a Mobile Maintenance Technician in Commerce City, Colorado. You will be responsible for traveling... ...repairs on heavy-duty trucks and trailers. The role requires strong mechanical repair skills, and team collaboration, as well as good...
$18 - $19 per hour
TravelCenters of America is hiring a Mobile Maintenance Technician to perform preventive maintenance services and repairs at customer facilities. This role demands a dedicated individual excited to join a dynamic team and ensure every traveler returns to the road better...Hourly pay- ...Mobile Diesel Service Technician Murphy-Hoffman Company, LLC is North America's largest Kenworth truck dealership group and leasing... ...we have an opening for a Mobile Diesel Service Journeyman / Mechanic. The role of the Mobile Diesel Service Journeyman / Mechanic...Temporary workImmediate startFlexible hours
- A leading transportation company in Colorado seeks an Experienced Diesel Technician to provide technical service and maintain excellent customer satisfaction. The role involves the repair and overhaul of diesel engines and other components, requiring comprehensive experience...Senior
- CAI Cox Automotive Corp Svcs., LLC is seeking a Senior Mobile Diesel Technician to perform DOT inspections, preventive maintenance, and advanced repairs on various trucks and trailers in a mobile environment. The role involves leading diagnostic efforts and client consultations...
- A leader in the commercial truck industry seeks an Experienced Mobile Diesel Technician to maintain the fleet for clients and handle service calls. This role requires strong mechanical aptitude and five years of experience in truck service. We offer competitive pay, an...
$34 - $39 per hour
...minor repairs and standard component inspections/ repairs of fleet diesel equipment (tractors, trailers, refrigeration units) as well as,... ...perform repairs as required Inspect brake systems, steering mechanisms, wheel bearings, and other important parts to ensure that they...Hourly payLocal areaRelocation packageAfternoon shift$34.5 - $50.6 per hour
A leading equipment company in Aurora, Colorado, seeks an Experienced Heavy Equipment Diesel Technician. This role involves performing maintenance and repairs on diesel equipment with a focus on Caterpillar machinery. Candidates should have a high school diploma or GED...SeniorHourly payRelocation package$62.4k - $66.56k
...looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward. Mobile Maintenance Mechanic - JLL What this job involves: The Mobile Maintenance Mechanic performs both preventative and corrective maintenance...Daily paidLocal areaShift work- A leading truck dealership group in Denver is seeking a Mobile Diesel Service Technician / Mechanic. This role involves performing heavy-duty mechanical repairs and gaining expertise in various systems, with a requirement for relevant certifications and tools. Ideal candidates...
- ...Job Description Job Description Responsibilities A Diesel Technician is responsible for providing service to our customers while maintaining exceptional customer service. This can include: maintenance, visual inspection, and removal of parts and attachments....Hourly payFull time
- We are seeking a highly skilled and motivated Systems Integration and Test Engineer to join our dynamic team in Aurora, CO. The ideal candidate will have experience in systems engineering principles, including system integration, verification, validation, and supportability...SeniorFull timeWork at office
- ...commercial vehicle dealerships across the US. Whether you're a recent graduate eager to kickstart your career or an experienced & certified Diesel Technician seeking a new path, we are looking to welcome you to our team! With more than 200 locations and nearly 8,000...Full timeShift work
- ...Job Description Job Description The Diesel Mechanic is responsible for maintaining and repairing diesel engines and related systems to ensure vehicles and equipment operate safely and efficiently. This role involves troubleshooting mechanical and electrical issues,...Full timeMonday to Friday
$34.01 per hour
...Description JOB SUMMARY The Shop Mechanic is a safety-sensitive role responsible for the high-level maintenance, diagnostic... ...precision measuring tools to identify malfunctions in engines (diesel and gasoline), transmissions, and electronic control systems....Hourly payTemporary workWork experience placementLocal areaWorldwideShift workWeekend work$31.24 per hour
...Job Description Meadow Gold has immediate job openings for a skilled Fleet Maintenance Mechanic to perform routine maintenance and repair services on different types of fleet vehicles under DOT and company regulations. In this role, the person will also perform...Immediate startMonday to FridayFlexible hoursShift work- ...Diesel Mechanic We are seeking an experienced and skilled Diesel Mechanic to join our team at SRM Concrete. The ideal candidate will be responsible for maintaining and repairing a variety of diesel-powered vehicles and equipment, including trucks, mixers, and other...Hourly pay
$20 - $39 per hour
...Full job description Calling all Diesel Mechanics! Do you want to work with a team who cares about the job and you? Come join the Denver, CO, DTL team now! We are seeking a skilled Diesel Mechanic to join our team specializing in tractor trailers. The...Work experience placementRelocation$24 - $38 per hour
...Denver metro area we are looking for both mobile and shop-based technicians. Our core... ...future. CDE Inspector Training, Cummins Diesel, Detroit training and school bus EV training... ...are met.This position requires basic mechanical skills on med/heavy duty trucks and buses...Hourly payFull timeApprenticeshipLocal areaRelocationMonday to Friday
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