Lead Mobile Diesel Mechanic - Day Shift

Cox; Mesa (AZ); On-site; USD 49,015 - 73,522; Full time

Benefits offered by this job

Weekly pay

Safety boots reimbursement

Uniforms provided

Job summary

Cox Fleet is hiring a Lead Mobile Diesel Technician to perform DOT inspections, preventative maintenance, and advanced repairs in a field environment across the United States.

The role requires hands-on diagnostics of light to heavy-duty trucks, inventory management on company trucks, and strong client communication. Weekly pay and comprehensive benefits are included.

Qualifications

• High school diploma or GED with required years of related experience.
• Own a set of hand tools to perform duties.
• ASE T8 PMI, ASE 608/609, and ASE C1 certifications within 18 months.
• DOT pre-employment background and DOT physical clearance.
• Valid driver’s license and ability to obtain a Driver Qualification File.

Responsibilities

• Perform PM, DOT inspections, and repairs on trucks in field/mobile settings.
• Diagnose and repair electrical, braking, cooling and engine systems.
• Road test vehicles to verify repairs and proper operation.
• Order parts, manage inventory, and document work orders in TRAIT.
• Maintain safety checks and post- trip/ pre-trip inspections.
• Communicate with customers to assess needs and provide estimates.

Skills

DOT inspections

PM maintenance

Diagnostics

Tool usage

Communication

Safety compliance

Education

HS Diploma/GED with experience

Tools

ASE T8 PMI certification

ASE 608/609 certification

ASE C1 certification

DOT background/physical

Job description

Cox Fleet offers on‑site mobile maintenance and repair services for light, medium, and heavy‑duty trucks and trailers across the United States. We are currently hiring a Lead Mobile Diesel Technician to perform DOT inspections, preventative maintenance, and advanced repairs in a field environment.

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, 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, transmissions, 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, determine accuracy and relevance of information, and generate and evaluate alternatives using sound judgement.
• Independently manage parts inventory and equipment provided on company‑issued service truck and perform periodic reconciliation.
• Maintain and operate company‑issued service vehicle, conduct safety checks, and perform pre‑ and post‑trip inspections.
• Work with and listen effectively to clients and customers to assess their needs, provide information or assistance, resolve problems, or satisfy expectations.
• Manage concurrent assigned tasks, prioritizing work related activities and time allocations.
• Use hand tools, precision instruments, 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 a company‑issued iOS device and the TRAIT application.
• Accurately complete DOT forms and all other forms of documentation in a timely fashion.
• Work independently 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 the repairs performed.
• Communicate with management and support team via email or phone to obtain approvals on repair estimates, retrieve purchase order numbers, and discuss RO findings notes.
• Perform all work in compliance with organizational safety, health, and environmental policies and federal regulations (OSHA, EPA, and DOT).
• Support Mobile Diesel Technicians I/II/Sr in inventory reconciliation.
• Mentor Mobile Diesel Technicians I/II/Sr on best practices and techniques to stay within or close to most standard repair times.
• Assist the Mobile Tech Manager with quality control inspections on work performed by Mobile Diesel Technicians I/II/Sr.

Requirements

• High School Diploma or GED and seven years of experience, or a higher degree/certification beyond a HS diploma/GED in a related discipline with five years of experience, or nine years of 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.
• Obtain Automotive Service Excellence (ASE) certification C1 (Service Consultant) within eighteen (18) months.
• Obtain 608/609 certification within eighteen (18) months.
• Complete a DOT‑regulated pre‑employment background screening and DOT physical prior to employment.
• Provide a current and valid DOT medical card with more than four (4) months remaining, or complete a DOT physical if less than four months remain.
• Be at least 21 years old.
• Hold a valid driver’s license and be able to obtain and maintain a Driver Qualification File.

Required Certifications

• ASE T8 (PMI) certification
• ASE 608/609 certification
• ASE C1 (Service Consultant) certification

Preferred Certifications

• ASE T2 (Diesel Engines) certification
• ASE T3 (Drivetrain) certification
• ASE T4 (Brakes) certification
• ASE T5 (Suspension) certification
• ASE T6 (Electrical and Electronic Systems) certification
• ASE T7 (HVAC) certification
• ASE A8 (Engine Performance) certification
• ASE L1 (Advanced Engine Performance Specialist) certification
• ASE L2 (Electronic Diesel Engine Diagnosis Specialist) certification

Skills & Abilities

• Understand the implications of new information for current and future problem‑solving and decision‑making.
• Lift, bend, climb, stand, and walk for long periods of time; perform moderately heavy labouring work.
• Exert oneself physically over long periods of time without tiring, including repetitive tasks.
• Communicate information succinctly and organize messages; engage in effective two‑way communication.
• Determine the type of tools and equipment needed.
• Accurately judge distances and relative positions of objects.
• Use logic and reasoning to identify strengths and weaknesses of alternative solutions, conclusions, or approaches.

Why Cox Fleet?

• Weekly pay – receive payment every Friday.
• Safe driving & tech efficiency bonuses.
• Safety boots and safety glasses reimbursement.
• Extreme weather gear (cold & hot).
• Uniforms provided with laundry service where available.
• Take the service truck home daily (no gas expenses).
• Tablet and company cellphone provided.
• Technical training to advance your career.
• Dedicated career path – over 50% of front‑line managers are promoted from within.

Benefits

• Health, dental, and vision insurance starting day one of employment.
• 401(k) matching starts after 90 days: 100% match up to 6% plus an additional 2% discretionary contribution.
• Accrue up to 200 hours (five weeks) of paid time off based on tenure.
• Tuition assistance and reimbursement.
• Adoption and surrogacy assistance.
• Pet insurance.
• Multiple employee resource groups, diversity groups, and paid volunteer hours.
• Employee discounts on new vehicle purchases, cellphone plans, ridesharing, home/rental insurance, wellness and fitness incentives, and more.

Compensation

Hourly pay rate: $35.58 – $53.37 per hour. The base rate may vary within this range based on location and qualifications. The position may also include commission, annual or monthly incentives, and other forms of additional compensation.

Applicants must currently be authorized to work in the United States without sponsorship. EOE, including disability and veterans.