Diesel Technician

Allegiance Fire and Rescue; New Jersey; On-site; USD 50,000 - 75,000; Full time

Benefits offered by this job

Competitive starting pay

Health benefits including Medical, and

Job summary

Allegiance Trucks in Flemington, NJ is hiring a Diesel Technician to provide technical service on trucks and engines, including troubleshooting and diagnostics. You will read repair orders, perform repairs, and install components while maintaining safety and cleanliness in the shop.

The position requires 1–2 years of relevant experience, a valid license, and a full set of personal hand tools. Training and career growth opportunities are part of a comprehensive benefits package.

Qualifications

• 1-2 years minimum work experience as a Medium and/or Heavy Diesel Technician.
• Valid driver’s license.
• Must possess a full set of personal hand tools.
• Must have completed diesel/ automotive certificate programs or equivalent hands-on experience.
• High School Diploma or GED; technical certification preferred.

Responsibilities

• Provide technical service on vehicles and equipment including troubleshooting, electrical and diagnostic services.
• Read Repair Orders and perform general and detailed repair of trucks, engines and components.
• Install injectors, pistons, liners, cam shafts, cylinder heads, bearings, oil pans, clutches, brakes, transmissions and other parts.
• Inspect guards, loose bolts and safety devices and adjust as needed.
• Lubricate moving parts and drive repaired vehicle to verify conformance to specifications.
• Advise the Service staff if additional repair work is necessary.
• Tag all return warranty parts.
• Maintain a neat, orderly, and safe work environment and handle tools properly.
• Follow safe work practices and seek assistance when necessary.

Skills

Mechanical aptitude

Troubleshooting

Reading repair orders

Education

High School Diploma / GED

Diesel/Automotive certificate programs

Tools

Hand tools

PC basic applications

Job description

Flemington, 356 Highway 31, Flemington, New Jersey, United States of America

Job Description

Posted Monday, July 27, 2026 at 4:00 AM

Welcome to Allegiance Trucks, where our dedication to service fuels every mile. Since our founding in March 2019, we've been on an unstoppable path of growth, acquiring 17 dealership groups and expanding to over 40 locations across ten states. Our team is as dynamic as it is diverse, united by a shared commitment to prioritize our customers, uplift one another, and foster a workplace where everyone thrives. As a leading truck dealership group, we're proud to represent top-tier brands like International, Hino, Isuzu, and Ford, providing exceptional support to the Northeast's essential trucking community. At Allegiance Trucks, we're not just moving forward - we're driving the future of trucking.

Why Allegiance Trucks?

When joining our team, you will be working alongside the best in the business, helping us make Allegiance Trucks great! We are a veteran friendly organization that provides opportunities for additional training, career growth and advancement, as well as a comprehensive benefits package that includes:

• Competitive starting pay
• Excellent health benefits including; Medical, Dental and Vision plans, a complimentary life insurance policy, and several other voluntary coverage options to choose from
• Generous Paid Time Off policy, including vacation, sick time and floating holidays
• 401(k) with Company match
• Support and encouragement for your continued advancement with additional training Allegiance Trucks is committed to equal opportunity for all employees and applicants.

Add On Benefits for Diesel Technician:

• An industry-leading performance-based Technician Incentive pay plan that rewards you for your contribution!
• $150 Annual Redwing Boot Program
• CDL and renewal costs may be covered

Job Responsibilities for Diesel Technician:

• Provide technical service on vehicles and equipment including troubleshooting, electrical and diagnostic services
• Read Repair Orders and be able to perform general and detailed repair of all trucks, engines and components
• Install injectors, pistons, liners, cam shafts, cylinder heads, rod & main bearings, oil pans, clutches, fan hubs, differentials, fifth wheels, brakes, change/ recharge batteries, and replace transmissions and other parts
• Examine protective guards, loose bolts, and specified safety devices on trucks, and adjust as needed
• Lubricate moving parts and drive repaired vehicle to verify conformance to specifications and verification repairs
• Advise the Service staff if additional repair work is necessary
• Tag all return warranty parts
• Maintain a neat, orderly, and safe work environment, and handle company tools properly
• Follow safe work practices and procedures, use safety equipment when required, responds to suggestions for working safely and seeks assistance when necessary
• Other projects/initiatives as assigned

Required Skills for Diesel Technician:

• Positive attitude, motivated with mechanical aptitude
• Candidates with International, Isuzu, Ford, Cummins, Detroit Diesel, CAT, Allison, or other brand experience such as Freightliner, Volvo, Mack, Kenworth or Peterbilt are encouraged to apply!
• 1-2 years minimum work experience as a Medium and/or Heavy Diesel Technician
• Valid driver’s license
• Must possess a full set of personal hand tools
• Must have, or be able to develop through training, a detailed knowledge of commercial truck and engine repair
• Must have successfully completed appropriate diesel/ automotive certificate programs in repairs and service, or equivalent hands-on experience
• Able to use a personal computer and basic applications
• Minimum of High School Diploma/ GED, Vocational or Technical certification in vehicle repair is preferred

As a proud Equal Opportunity Employer (EOE), we do not discriminate based on race, color, national origin, ancestry, citizenship status, religion, sex, sexual stereotyping, sexual orientation, gender, gender identity, gender expression, age, marital status, mental or physical disability, medical condition, genetic information, military or veteran status, pregnancy (which includes pregnancy, childbirth, and medical conditions related to pregnancy, childbirth, or breastfeeding), or any other protected characteristic. Employment may be contingent upon Allegiance’s receipt of an acceptable and job‑related drug test, motor vehicle report, and/or reference check, as applicable and permissible by law.

Flemington, 356 Highway 31, Flemington, New Jersey, United States of America