Sr. Mobile Diesel Mechanic
- Location
- Manhattan, NY
- Work type
- Full Time
- Posted
- 2026-09-03
Job description
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 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.