Lead Mobile Diesel Technician II — On‑Site Diagnostics

Cox-Fleet-; Edison (NJ); On-site; USD 60,000 - 90,000; Full time

Benefits offered by this job

Weekly pay

Safety boots allowance

Uniforms provided

Tablet & company cellphone

Job summary

Cox Fleet is hiring a Mobile Diesel Technician II to perform licensed DOT inspections, preventative maintenance, and advanced diagnostics on light, medium, and heavy-duty trucks in a mobile/field setting.

The Technician II serves as a lead on jobsites, coordinates with customers, and adheres to DOT and company safety standards while maintaining tools, parts, and documentation using TRAIT on an iOS device.

Qualifications

• DOT inspections and preventative maintenance responsibilities.
• Advanced diagnostics on diesel equipment.
• Strong safety compliance with OSHA/EPA/DOT.
• Effective communication with clients and teams.
• Ability to manage parts inventory and scheduling.

Responsibilities

• Perform scheduled PMs, DOT inspections, and follow-up repairs on vehicles.
• Diagnose and repair electrical, hydraulic, and mechanical systems.
• Road-test vehicles to verify repairs and diagnose malfunctions.
• Document work and upload RO photos using company device.
• Maintain service truck and perform pre/post-trip inspections.

Skills

DOT inspections

PM inspections

Diagnostics

Safety compliance

Customer communication

Prioritizing tasks

Education

High School Diploma/GED

Tools

ASE certifications

Job description

Cox Fleet is hiring a Mobile Diesel Technician II to perform licensed DOT inspections, preventative maintenance, and advanced diagnostics on light, medium, and heavy-duty trucks in a mobile/field setting.

The Technician II serves as a lead on jobsites, coordinates with customers, and adheres to DOT and company safety standards while maintaining tools, parts, and documentation using TRAIT on an iOS device.