Diesel Technician

Berger Allied; Phoenix (AZ); On-site; USD 60,000 - 85,000; Full time

Job summary

Commercial Truck & Mobile Repair in Phoenix, AZ, is seeking an experienced Diesel Technician to diagnose, repair, and maintain Class 6-8 trucks and trailers. This role blends shop work with on-site mobile service, offering variety and independence within a safety‑conscious team.

You will work with diverse makes and transmissions, require a high school diploma, and have 3+ years of diesel experience. CDL-A is preferred but not required; you must pass a drug test and background check.

Qualifications

• High school diploma or equivalent required.
• Three or more years of diesel technician experience preferred.
• Knowledge of heavy-duty truck and trailer systems, diagnostics, and DOT inspections.
• Valid driver's license; CDL-A preferred but not required.
• Strong communication and troubleshooting skills.
• Ability to work independently in the field and in the shop.
• Must provide personal hand tools; drug test and background check required.

Responsibilities

• Diagnose, inspect, maintain, and repair Class 6-8 trucks and trailers.
• Perform preventive maintenance and DOT inspections.
• Complete service calls at customer locations and in the shop.
• Maintain tools, equipment, and parts inventory; source parts from local vendors.
• Create and close repair orders using company iPad and document all work.
• Adhere to Standard Repair Times and maintain productivity.
• Communicate professionally with customers and coworkers, keeping a safe, organized workspace.

Skills

Diesel tech experience

Diagnostics

Communication skills

Independent/field work

Education

High school diploma or equivalent

Tools

iPads

Repair order systems

Basic computer apps

Job description

Description

Commercial Truck & Mobile Repair is a growing, full-service fleet maintenance company that has served commercial fleets since the mid-1970s. With established operations in St. Paul, MN, and Houston, TX, we are expanding our footprint with a new, state-of-the-art heavy-duty diesel repair facility on the West Side of Phoenix, strategically located near major transportation hubs to serve regional and national fleets.

As part of the Berger Moving & Storage family of companies, we take pride in our strong team culture, commitment to customer service, and opportunities for professional growth. We value employees who demonstrate hard work, integrity, respect, and a dedication to keeping our customers moving.

We are seeking an experienced Diesel Technician to perform maintenance, diagnostics, and repairs on Class 6-8 commercial trucks and trailers. This position combines hands-on work in the shop with mobile service at customer locations, offering variety and the opportunity to work independently as well as alongside a team.

Our technicians work on a wide range of makes, engines, and transmissions, including Caterpillar, Cummins, Detroit Diesel, Mercedes-Benz, and International engines, as well as Eaton and Allison transmissions.

Key Responsibilities

• Diagnose, inspect, maintain, and repair Class 6-8 trucks and trailers, including brakes, tires, electrical systems, and other components.
• Perform preventive maintenance, DOT inspections, and necessary repairs or component replacements.
• Complete service calls at customer locations and perform repairs in the shop as needed.
• Maintain service truck tools, equipment, and parts inventory; obtain parts from local vendors as necessary.
• Open and close repair orders using a company-issued iPad and accurately complete all required service documentation.
• Maintain productivity and work within established Standard Repair Times (SRTs).
• Communicate professionally with customers and coworkers while maintaining a safe, clean, and organized work environment.

Qualifications

• High school diploma or equivalent required.
• Three or more years of diesel technician experience preferred.
• Knowledge of heavy-duty truck and trailer systems, diagnostics, preventive maintenance, and DOT inspections.
• Valid driver's license required; CDL-A preferred but not required.
• Strong communication, organizational, and troubleshooting skills.
• Ability to work independently in the field and collaboratively in the shop.
• Proficiency with iPads, repair order systems, email, and basic computer applications.
• Must provide personal hand tools adequate for the job.
• Must successfully pass a drug test and background check.

Why Join Us?

• Join an established and growing fleet maintenance company.
• Enjoy a varied role combining shop repairs and mobile service.
• Work with a wide range of commercial vehicles and equipment.
• Be part of a supportive team that values safety, quality, and professional development.

Ready to put your skills to work? Join Commercial Truck & Mobile Repair and help keep our customers' fleets moving.

Commercial Truck & Mobile Repair is an affirmative action/Equal Opportunity employer that welcomes diversity in the workplace. All applicants will receive consideration for employment regardless of their race, color, creed, religion, national origin, sex, sexual orientation, disability, age, marital status or status with regard to public assistance.