Diesel Technician Jobs
Diesel Technician jobs are open across trucking fleets, construction, agriculture, and municipal services, from entry-level lube technicians to senior heavy-equipment technicians and shop foremen, with specializations in preventive maintenance, engine overhaul, and emissions diagnostics. Scan the live roles below and apply to whichever ones fit.
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Showing 5 of 1,892+ Diesel Technician jobs
Company Overview
Muller, Inc. is a multi-generational, family-owned beverage wholesaler serving Philadelphia and the surrounding counties. Delivering big-name brands with personalized service, from our headquarters in Northeast Philadelphia, we supply retailers and restaurants throughout the Delaware Valley and beyond.
Position Summary
The Heavy-Duty Diesel Mechanic is responsible for the preventive maintenance, diagnosis, and repair of company fleet vehicles and equipment, including trucks, vans, forklifts, and related equipment. This position performs mechanical, electrical, hydraulic, brake, suspension, HVAC, and emissions-system repairs while ensuring vehicles and equipment remain safe, reliable, and compliant with applicable regulations.
Essential Responsibilities
- Diagnose and repair breakdowns, malfunctions, and other mechanical issues involving company vehicles and equipment.
- Perform operational tests to verify reported vehicle or equipment concerns prior to beginning repairs.
- Diagnose and repair diesel and gasoline engines, transmissions, clutches, steering and suspension systems, fuel and ignition systems, electrical systems, brakes, HVAC systems, and emissions systems.
- Diagnose and repair hydraulic systems and lift-gate equipment.
- Perform preventive maintenance, including fluid changes, lubrication, safety inspections, brake service, and other scheduled maintenance.
- Perform required DOT and Pennsylvania vehicle inspections in accordance with applicable regulations.
- Conduct final operational and safety tests following repairs to ensure vehicles and equipment are operating properly.
- Inspect vehicles and equipment to identify additional safety concerns or repairs that may be required.
- Respond to emergency breakdowns and perform roadside repairs when necessary.
- Maintain accurate records of inspections, repairs, preventive maintenance, and other fleet-service activities.
- Operate forklifts and other equipment as necessary to perform assigned duties.
- Follow all company safety procedures, applicable regulatory requirements, and manufacturer specifications.
- Maintain a clean, organized, and safe work area.
- Perform other duties as assigned.
Qualifications (Required or Willing to Obtain)
- High school diploma/GED and completion of heavy-duty diesel/mechanical training or a minimum of five years of related heavy-duty diesel/fleet mechanic experience.
- Current and valid Class A Commercial Driver's License (CDL-A).
- Current Pennsylvania Class 7 Inspection License, as required for the position.
- Current DOT inspection certification, as applicable.
- Demonstrated experience diagnosing and repairing heavy-duty diesel vehicles and equipment.
- Knowledge of diesel engines, transmissions, brakes, suspension, steering, hydraulics, electrical systems, and emissions systems, including DPF and EGR systems.
- Ability to safely use hand tools, power tools, and diagnostic equipment.
- Ability to read and follow technical manuals, manufacturer specifications, and repair procedures.
Physical Requirements
This position requires the ability to:
- Stand, walk, sit, bend, reach, kneel, and work in various positions for extended periods.
- Push, pull, grasp, and manipulate tools and equipment.
- Perform repetitive hand and wrist movements associated with mechanical repairs.
- Lift and carry up to 100 pounds, with or without reasonable accommodation.
- Work in varying temperatures and conditions, including outdoor environments and around operating vehicles and equipment.
- Safely work around heavy equipment, vehicles, tools, and mechanical systems.
Equal Opportunity Employer
Muller, Inc. is an equal opportunity employer to all applicants and positions without regard to race/ethnicity, color, national origin, ancestry, sex/gender, gender identity/expression, sexual orientation, marital/prenatal status, pregnancy/childbirth or related conditions, religion, creed, age, disability, genetic information, veteran status, or any protected status by local, state, federal or country-specific law.
Pay: From $60,000.00 per year
Benefits:
- 401(k)
- 401(k) matching
- Dental insurance
- Employee discount
- Health insurance
- Life insurance
- Paid time off
- Referral program
- Vision insurance
Education:
- High school or equivalent (Preferred)
License/Certification:
- CDL A (Preferred)
Work Location: In person
Company Overview
Muller, Inc. is a multi-generational, family-owned beverage wholesaler serving Philadelphia and the surrounding counties. Delivering big-name brands with personalized service, from our headquarters in Northeast Philadelphia, we supply retailers and restaurants throughout the Delaware Valley and beyond.
Position Summary
The Heavy-Duty Diesel Mechanic is responsible for the preventive maintenance, diagnosis, and repair of company fleet vehicles and equipment, including trucks, vans, forklifts, and related equipment. This position performs mechanical, electrical, hydraulic, brake, suspension, HVAC, and emissions-system repairs while ensuring vehicles and equipment remain safe, reliable, and compliant with applicable regulations.
Essential Responsibilities
- Diagnose and repair breakdowns, malfunctions, and other mechanical issues involving company vehicles and equipment.
- Perform operational tests to verify reported vehicle or equipment concerns prior to beginning repairs.
- Diagnose and repair diesel and gasoline engines, transmissions, clutches, steering and suspension systems, fuel and ignition systems, electrical systems, brakes, HVAC systems, and emissions systems.
- Diagnose and repair hydraulic systems and lift-gate equipment.
- Perform preventive maintenance, including fluid changes, lubrication, safety inspections, brake service, and other scheduled maintenance.
- Perform required DOT and Pennsylvania vehicle inspections in accordance with applicable regulations.
- Conduct final operational and safety tests following repairs to ensure vehicles and equipment are operating properly.
- Inspect vehicles and equipment to identify additional safety concerns or repairs that may be required.
- Respond to emergency breakdowns and perform roadside repairs when necessary.
- Maintain accurate records of inspections, repairs, preventive maintenance, and other fleet-service activities.
- Operate forklifts and other equipment as necessary to perform assigned duties.
- Follow all company safety procedures, applicable regulatory requirements, and manufacturer specifications.
- Maintain a clean, organized, and safe work area.
- Perform other duties as assigned.
Qualifications (Required or Willing to Obtain)
- High school diploma/GED and completion of heavy-duty diesel/mechanical training or a minimum of five years of related heavy-duty diesel/fleet mechanic experience.
- Current and valid Class A Commercial Driver's License (CDL-A).
- Current Pennsylvania Class 7 Inspection License, as required for the position.
- Current DOT inspection certification, as applicable.
- Demonstrated experience diagnosing and repairing heavy-duty diesel vehicles and equipment.
- Knowledge of diesel engines, transmissions, brakes, suspension, steering, hydraulics, electrical systems, and emissions systems, including DPF and EGR systems.
- Ability to safely use hand tools, power tools, and diagnostic equipment.
- Ability to read and follow technical manuals, manufacturer specifications, and repair procedures.
Physical Requirements
This position requires the ability to:
- Stand, walk, sit, bend, reach, kneel, and work in various positions for extended periods.
- Push, pull, grasp, and manipulate tools and equipment.
- Perform repetitive hand and wrist movements associated with mechanical repairs.
- Lift and carry up to 100 pounds, with or without reasonable accommodation.
- Work in varying temperatures and conditions, including outdoor environments and around operating vehicles and equipment.
- Safely work around heavy equipment, vehicles, tools, and mechanical systems.
Equal Opportunity Employer
Muller, Inc. is an equal opportunity employer to all applicants and positions without regard to race/ethnicity, color, national origin, ancestry, sex/gender, gender identity/expression, sexual orientation, marital/prenatal status, pregnancy/childbirth or related conditions, religion, creed, age, disability, genetic information, veteran status, or any protected status by local, state, federal or country-specific law.
Pay: From $60,000.00 per year
Benefits:
- 401(k)
- 401(k) matching
- Dental insurance
- Employee discount
- Health insurance
- Life insurance
- Paid time off
- Referral program
- Vision insurance
Education:
- High school or equivalent (Preferred)
License/Certification:
- CDL A (Preferred)
Work Location: In person
Diesel Technician Jobs by Experience Level
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Find Diesel Technician JobsDiesel Technician Job Market
Who's Hiring
- Love’s Travel Stops244
- Ryder System112
- Cummins45
- Transport Refrigeration42
- Schneider36
Top Industries Hiring
- Distribution & Wholesale
- Energy
- Chemicals & Materials
- Mining & Natural Resources
- Transportation & Logistics
What Employers Look For
The qualifications that appear most often in diesel technician jobs.
- ASE certification in one or more T-series or medium/heavy truck areas
- Hands-on experience diagnosing and repairing diesel engines such as Cummins, Caterpillar, or Detroit Diesel
- Proficiency with electronic diagnostic scan tools and fault code interpretation
- Valid commercial driver's license or ability to obtain one
- Completion of a diesel technology program at a vocational school or community college
- Experience with DOT compliance inspections and preventive maintenance scheduling
Tips for Your Diesel Technician Job Search
List your ASE certifications prominently
Hiring managers scan for ASE T-series and L-series certifications before reading anything else on a diesel technician resume. Put them in a dedicated certifications section near the top, not buried in a skills list at the bottom.
Document the equipment makes you have serviced
Employers want to know whether you have hands-on time with Cummins, Caterpillar, Detroit Diesel, or PACCAR engines. List specific engine families and vehicle makes in your work history so hiring managers can match you to their fleet without guessing.
Target openings by fleet type, not just job title
A long-haul trucking shop, a municipal bus garage, and a construction equipment dealer each hire diesel technicians but expect very different experience. Filter your search by industry vertical so you apply to shops that actually run the equipment you know.
Apply early to roles that fit
Migrate Mate lists diesel technician openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Prepare for a hands-on shop assessment
Many diesel shops ask candidates to perform a basic diagnostic task or read a fault code on actual equipment during the interview. Review your scan tool workflow and be ready to walk through your diagnostic process step by step out loud.
Negotiate your flat-rate structure before you accept
Flat-rate pay can vary significantly between shops based on labor time guides and come-back policies. Ask during the offer stage how warranty repairs are flagged, how comeback hours are handled, and whether the shop uses Mitchell or a proprietary time guide.
Diesel Technician Jobs: Frequently Asked Questions
Which companies are hiring the most diesel technicians?
The companies hiring the most diesel technicians right now include Love’s Travel Stops, Ryder System, and Cummins, with the largest share of openings in Florida, Texas, and North Carolina, based on current listings on Migrate Mate as of September 2026. Fleet maintenance contractors and truck dealerships tend to post the highest volume of openings consistently.
How many diesel technician jobs are remote?
About 2% of diesel technician openings are fully remote or hybrid as of September 2026, since most of the work requires physical access to equipment in a shop or field setting. The sub-areas most likely to offer remote or hybrid arrangements are service writing, technical training, and warranty administration roles that support diesel teams.
How do you become a diesel technician?
Most diesel technicians complete a diesel technology or heavy equipment program at a vocational school or community college, which typically includes classroom instruction and shop lab time on actual engines. After graduating, you enter an entry-level technician or lube tech role to build hands-on hours, then pursue ASE T-series certifications as you gain experience in specific systems like brakes, electrical, or engines.
Can you get hired as a diesel technician with little experience?
Yes, many shops hire entry-level diesel technicians as lube techs or technician helpers and train them on the floor. Completing a diesel technology program, earning even one ASE certification, and being able to supply your own basic hand tools will make you a competitive candidate for these roles even without professional shop experience.
What does the diesel technician interview process look like?
Most diesel technician interviews start with a phone or in-person conversation about your experience with specific engine families and the types of repairs you have handled. A shop tour and hands-on assessment often follow, where you may be asked to perform a basic diagnostic task or interpret a fault code. Some employers also verify your ASE certifications and ask about your personal tool inventory before making an offer.
Where can I find and apply to diesel technician jobs?
You can find and apply to diesel technician jobs on Migrate Mate, which lists current openings from across the United States. Search for roles that match your experience and equipment background, then apply directly to each listing that fits.
See All 1,892+ Diesel Technician Jobs
Find roles that match your experience and apply in just a few clicks.
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