Experienced Diesel Technician / Mechanic

Campbell Supply, Co.; Newark (NJ); On-site; USD 40,000 - 100,000; Full time

Benefits offered by this job

Competitive pay

Overtime opportunities

Paid vacation

Holidays

Health insurance

401(k) with match

Employee discounts

Uniforms

Training programs

Job summary

Campbell Supply in Newark, NJ is seeking an experienced Diesel Technician to diagnose, repair, and maintain heavy‑duty engines and driveline components using OEM software and Freightliner tooling.

You will join a team that values expertise, safety, and continuous improvement, with opportunities to mentor others and advance within our seven‑location network. We offer competitive pay, overtime, paid vacation and holidays, 401(k) with match, comprehensive benefits, and factory‑provided training.

Qualifications

• 5+ years of experience as a diesel technician or equivalent.
• Advanced diagnostic and troubleshooting skills with ability to independently diagnose and repair engine and driveline systems.
• Experience using OEM diagnostic software and electronic troubleshooting tools.
• Formal diesel training and OEM certifications preferred.
• Excellent communication and teamwork skills.

Responsibilities

• Diagnose, document, and repair engine, transmission, and major component fault codes using OEM software and laptops.
• Perform troubleshooting, service, and repair on diesel components and perform preventive maintenance.
• Attend OEM and dealer training programs as required.
• Mentor junior technicians and participate in continuous improvement initiatives.

Job description

Experienced Diesel Technician / Mechanic

Location: Newark, NJ

Salary Range: $30.00 To $50.00 Hourly

Are you a top-performing diesel technician looking for your next opportunity? Join Campbell Supply, the largest Freightliner dealership in the Tri-State Area, where your expertise is respected, your contributions are valued, and your career can continue to grow. Work with industry-leading products, advanced diagnostic technology, and a team that understands the importance of skilled technicians!

About Us

Campbell Supply is a family-owned dealership with a legacy dating back to 1967. With seven locations, we are a cornerstone in the commercial and emergency vehicle industries, providing exceptional service, quality products, and tailored solutions. We offer a range of commercial and emergency product lines, including Freightliner, Western Star, Isuzu, Spartan, and KME Emergency Vehicles.

We value expertise, professionalism, and technical excellence. As the largest Freightliner dealership in the Tri-State Area, we provide technicians with access to the latest OEM diagnostic tools, Freightliner factory training, and the support needed to tackle complex repairs on today's advanced commercial vehicles. Level A technicians will find opportunities to mentor junior team members, expand their technical knowledge, and advance within our seven-location network.

Diesel Technician Duties

• Diagnose, document, and repair engine, transmission, and major component fault codes using company-supplied laptops and OEM software while following proper warranty procedures.
• Perform troubleshooting, service, and repair on all components as well as preventative maintenance and reconditioning.
• Demonstrate well-developed technical and troubleshooting skills with effective problem-solving abilities.
• Attend OEM and dealer training online as well as in-person when required.

Requirements

• 5+ years of experience as a diesel technician, fleet mechanic, heavy equipment mechanic, or equivalent.
• Advanced diagnostic and troubleshooting skills with the ability to independently diagnose and repair engine, aftertreatment, electrical, drivability, transmission, and chassis systems.
• Experience using OEM diagnostic software and electronic troubleshooting tools.
• Formal diesel training and OEM certifications are preferred.
• Excellent communication skills with the ability to effectively communicate with co‑workers and drivers, demonstrating teamwork skills.
• Ability to manage multiple functions simultaneously in a fast‑paced environment with minimal supervision.
• Participation in Continuous Improvement Initiatives and the DTNA Elite Support Program.

Shifts Available

Monday – Friday 8:30 A – 5 P

Monday – Friday 7 A – 3:30 P

Overtime opportunities available.

Benefits

• Competitive compensation: $40,000 – $100,000 annually.
• Monthly Bonus Opportunities and Referral Program.
• Paid Vacation and Holidays.
• Comprehensive medical, vision, and dental insurance.
• 401(k) with a company-provided match after the 1st year.
• Employee discounts with preferred vendors.
• Company-provided uniform and laundry service.
• Career Advancement Opportunities with factory-provided intensive in-person and online training programs.