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Senior Diesel Performance Jobs Near Me

Cox Fleet

Sr Mobile Diesel Mechanic

Columbus, OH · On-site

$23.75 - $31.50/hr

A successful Sr Mobile Diesel Technician complies with all company policies and achieves high level performance metrics. DUTIES: * Perform scheduled preventative maintenance ("PM"), DOT Inspections ...

Knight Transportation

Mechanic - Senior

Columbus, OH

$23.67 - $32.57/hr

We are committed to a culture of high expectations and exceptional performance. At Knight, we hire ... refrigerated units, diesel engines, transmissions, axles and any other components or systems.

Knight Transportation

Mechanic - Senior

Columbus, OH · On-site

$23.67 - $32.57/hr

We are committed to a culture of high expectations and exceptional performance. At Knight, we hire ... refrigerated units, diesel engines, transmissions, axles and any other components or systems.

Knight Transportation

Mechanic - Senior

Columbus, OH · On-site

We are committed to a culture of high expectations and exceptional performance. At Knight, we hire ... refrigerated units, diesel engines, transmissions, axles and any other components or systems.

Knight Transportation

Mechanic - Senior

Columbus, OH · On-site

$23.67 - $32.57/hr

We are committed to a culture of high expectations and exceptional performance. At Knight, we hire ... refrigerated units, diesel engines, transmissions, axles and any other components or systems.

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As of Aug 15, 2026, the average yearly pay for senior diesel performance in the United States is $127,122.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,500.00 and $149,000.00 per year, depending on experience, location, and employer.

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Senior Diesel Performance jobs near you
A map of the United States highlighting the number of Senior Diesel Performance job openings by state according to ZipRecruiter. The image is accompanied by a detailed chart listing the number of Senior Diesel Performance job openings in each state, with California having the most at 2 and Alaska the least at 0.

Sr Mobile Diesel Mechanic

Cox Fleet

Columbus, OH • On-site

$23.75 - $31.50/hr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 16 days ago

Job description

*** If you have any questions or to connect with a recruiter while your application is being reviewed, please Text DFS2 to 317-597-8130 ***

****Equal Opportunity Employer - Disabled/Veterans encouraged to apply****

Cox Fleet keeps your fleet moving!
Headquartered in Indianapolis, CoxFleet has grown to become one of the largest fleet maintenance companies in the country.
Cox Fleet is 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. Cox Fleet also services customers utilizing its 50+ nationwide service centers; each offering accident repair, painting, refurbishment, and heavy mechanical repair. We are supported by a 24/7 in-house call-center and provide scheduled maintenance services and unscheduled services to fleets anywhere, anytime.

Cox Fleet is currently hiring a Sr. Mobile Diesel Technician.

The Sr. Mobile Diesel Technician will be responsible for performing licensed DOT inspections, Preventative Maintenance inspections, light and advanced repairs, advanced mechanical/hydraulic/electrical and electronic diagnostics, and other duties as assigned.   Heavily relied upon for advanced diagnostics and triage of complicated repairs by Mobile Diesel Technician I/II.  Considered the Lead on jobsites by customers and Technicians.  Functions as a consultant on the customer's behalf.  A successful Sr Mobile Diesel Technician complies with all company policies and achieves high level performance metrics.

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, but not limited to the following: Electrical/Brake/Cooling Systems, Starters/Alternators, Fan clutches, Engine electronics, Diesel steering systems, Engines (gas and diesel), Transmissions (manual and automatic), Clutches, Differentials, etc.
  • Diagnose, adjust, and repair various types of truck equipment including, but not limited to the following: Electrical/Brake/Cooling Systems, Starters/Alternators, Air conditioning systems, Fan clutches, Engine electronics, Diesel steering systems, Engines (gas and diesel), Transmissions (manual and automatic), Clutches, Differentials, etc.
  • 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 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 and perform periodic reconciliation.
  • 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, providing information or assistance, resolving their problems, or satisfying their expectations.
  • 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.
  • Accurately complete DOT forms and all other forms of documentation in timely fashion.
  • Work with a high degree of independence and manage own daily schedule.
  • Maintain a high level of productivity and be able to work within or close to most Standard Repair Times.
  • Obtain parts from approved local and national vendors as necessary for the repairs to be performed.
  • Communicate with management and support team via email or phone to obtain approvals on repair estimates, retrieve purchase order numbers and/or discuss RO findings notes.
  • Perform all work in compliance with organizational safety, health and environmental policies, and federal regulations, to include OSHA, EPA, and DOT.
  • Maintain company issued service truck, conduct safety checks and daily pre/post trip inspections.

REQUIREMENTS:
  • High School Diploma/GED and 3 years’ experience in a related field. The right candidate could also have a different combination, such as any level degree/certification beyond a HS diploma/GED in a related discipline; or 5 years’ experience in a related field.
  • At least 3 years of experience with refrigerated equipment.
  • Possess and supply a set of hand tools necessary to perform required job duties.
  • OEM training and certifications are preferred.
  • Participate in and complete all-in company required training.
  • Possess and supply a set of hand tools necessary to perform required job duties.
  • This position follows regulations issued by the Department of Transportation’s (DOT) Federal 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.
  • A current and valid DOT medical card with more than four (4) months remaining until its expiration may be submitted in leu of a DOT physical. If the DOT medical card has four (4) months or less of validity remaining, a DOT physical will be required.
  • Due to interstate operating authority commerce regulations, candidates must be at least 21 years or older.
  • Safe drivers needed; valid driver’s license required. Candidate must hold a valid state-of-residence driver’s license, be able to obtain and maintain their Driver Qualification File.

REQUIRED CERTIFICATIONS OR OBTAINED WITHIN 18 MONTHS:
  • ASE T8 (PMI) certification.
  • ASE 608/609 certification*.

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

SKILLS & ABILITIES:
  • Understand the implications of new information for both current and future problem-solving and decision-making.
  • Ability to lift, bend, climb, stand, and walk for long periods of time; ability to perform moderately heavy laboring work.
  • Ability to exert oneself physically over long periods of time without tiring, which may include performing repetitive tasks.
  • Communicates information (for example, facts, ideas, or messages) in a succinct and organized manner.  Engages in effective two-way communication with individuals and groups.
  • Ability to determine the type of tools and equipment needed.
  • Ability to accurately judge which of several objects is closer or farther away from the observer, or the distance between an object and the observer.
  • Use logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions, or approaches to problems.

Why Cox Fleet?
  • Weekly pay – get paid every Friday for added convenience and financial flexibility.
  • Safe driving & tech efficiency bonuses.
  • Safety boots & safety glasses reimbursement.
  • Extreme weather gear (cold & hot).
  • Uniforms provided with laundry service where available.
  • Take the service truck home daily (stop paying for gas!).
  • Tablet & company cellphone provided.
  • Technical training provided to advance your career.
  • Dedicated career path – Over 50% of our front-line managers are promoted from within.

Benefits:
  • Health, dental, vision insurance starts DAY ONE of employment.
  • 401(k) matching starts after 90 days, 100% match up to 6% contribution and an additional 2% discretionary contribution by the company.
  • 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, ridesharing, home/rental insurance, wellness/fitness incentives and much more.

“Please note: This posting is for informational purposes only and does not constitute an official job application. To be considered for employment, all candidates must submit their application directly through official Cox careers website.  Applicants who complete Applications that are received through third-party postings, social media, or other channels will be invited to submit an official Application through the company’s career site.” Job # R202569508