Diesel Technician Level 3 (Mon-Fri 6am-2:30pm)

Job Title

Tractor Trailer Maintenance Technician

Essential Job Functions:

• Comply with all safety and best practices and follow company Standard Operating Procedures (SOP).
• Demonstrate proficiency in the repair and diagnosis of diesel engines, power train to include differentials, transmissions, clutches, drive shafts, wheel ends. Electrical systems including starters, alternators and lights. HVAC systems. Steering systems. Electronics to include ECM's, ECU's, sensors etc. Engine bolt on items such as turbos, fan clutches, cooling system etc. Brake systems including ABS & air disk brakes. Suspension systems (spring and air) including tire issues, and after treatment devices such as DPF and DOC. Perform electrical system repairs, cooling system maintenance and preform complete vehicle diagnosis.
• Performs all levels of preventive maintenance services on truck and trailing equipment.
• Perform mechanical and general appearance reconditioning of equipment for "trade-ins" and prepare new equipment for delivery.
• Must be annual vehicle inspector certified and brake inspector certified (per DOT requirements).
• Successfully demonstrate welding skills (mig, tig) in non-standard situations and on varying materials as needed. (AU and steel)
• Advanced skills with diagnostic software for Detroit DD15 engines, and DEF/after treatment repairs.
• Proficient with windows-based computer systems and ability to use diagnostic software.
• Identify and perform warrantable repairs and document on repair order.
• Use hand tools such as screwdrivers, pliers, wrenches, pressure gauges, and precision instruments, as well as power tools such as pneumatic wrenches, welding equipment, and jacks and hoists.
• Maintain work area appearance and safely.
• Road test vehicles when necessary to diagnose malfunctions or to ensure that they are working properly.
• Perform duties with no supervision and in a timely and efficient manner.
• Perform routine maintenance such as changing oil, checking batteries, and lubricating equipment and machinery.
• Inspect, test, and listen to defective equipment to diagnose malfunctions, using test instruments such as handheld computers, motor analyzers, chassis charts, and pressure gauges.
• Examine and adjust protective guards, loose bolts, and specified safety devices.
• Inspect and verify dimensions and clearances of parts to ensure conformance to factory specifications.
• Specialize in repairing and troubleshooting of major components such as engine, transmissions and differentials and fifth wheels, to include replacing complete assemblies, turbochargers, fuel system components etc.
• Other projects and tasks as assigned by supervisor.
• Provide directions and repair instructions and to mentor other technicians as needed.
• Ensure compliance with DOT standards and properly document work completed.
• Proficiently enter and process all transactions within the maintenance system.
• Assist the with fleet analyses, action development and stances.
• Complete or assist with miscellaneous projects as assigned.

Minimum Qualifications:

• 6 years practical experience with tractor trailer maintenance required.
• High school diploma or equivalent required.
• Vocational / Technical or certification preferred.
• Demonstrated customer service and relationship building skills.
• Expert understanding of fleet maintenance policies, DOT standards and industry practices.
• Organized with the ability to deal with multiple activities in a fast-paced environment.
• Specialized training and experience in the diagnosis/troubleshooting of major components (engines, transmissions, differentials), OEM training courses required (FRTL or INTL), ASE Certification preferred, and 608/609 certifications preferred.
• Proficiency in the use of all tools of trade (including welding equipment, diagnostic equipment, hand and power tools) required.
• Clean MVR required and able to operate service truck preferred.
• Strong work ethic.
• Excellent communication skills. Must be able to communicate in English, both verbally and written, and can read and understand English.
• Demonstrated ability to recommend continuous improvement ideas and actions.
• Results orientated with the ability to work with minimal supervision.
• Proficiency with computers.
• A valid driver's license is required.
• Ability to work in non-climate-controlled conditions required.
• Willingness to travel for training.
• Must have own tools (hand and pneumatic) sufficient to do any job that is required.

Key Performance Measurements:

• Safety
• Meets or exceeds industry SRT times (productivity)
• Truck uptime (PM to PM)
• Customer service to drivers (driver satisfaction)
• Fleet satisfaction (repeat work)

Earn up to $31.29/hour

This is an estimated range based on the circumstances at the time of posting, however it may change based on a combination of factors, including but not limited to skills, experience, education, market factors, geographical location, budget, and demand.

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About Us

Hub Group is the premier, customer-centric supply chain company offering comprehensive transportation and logistics management solutions. Keeping our customers' needs in focus, Hub Group designs, continually optimizes and applies industry-leading technology to our customers' supply chains for better service, greater efficiency and total visibility. As an award-winning, publicly traded company (NASDAQ: HUBG) with $5 billion in revenue, our 6,000 employees and drivers across the globe are always in pursuit of "The Way Ahead" - a commitment to service, integrity and innovation. We believe the way you do something is just as important as what you do. For more information, visit

Job Info

• Job Identification 11890
• Job Category Fleet Services
• Posting Date 05/18/2026, 02:47 PM
• Job Schedule Full time
• Locations US MO Liberty Terminal