Lead Mobile Diesel Technician – On‑Site DOT Diagnostics

CAI Cox Automotive Corp Svcs., LLC; Philadelphia (Philadelphia County); Hybrid; USD 44,000 - 67,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Paid time off

Tuition assistance

Uniforms reimbursement

Company vehicle

Job summary

Cox Automotive is seeking a Sr. Mobile Diesel Technician to perform DOT inspections, preventative maintenance, and on-site repairs in a mobile/field setting.

You will diagnose complex mechanical, electrical and hydraulic systems, manage parts and documentation via TRAIT on an iOS device, and ensure safety and DOT compliance. This role requires independent scheduling and customer communication.

Qualifications

• High School Diploma/GED and 5 years’ experience in a related field.
• Alternative: any level degree/certification beyond HS with 3 years’ experience or 7 years in field.
• Obtain ASE T8 (PMI) certification within 18 months.
• Obtain ASE 608/609 certification within 18 months.
• DOT regulations and DOT pre-employment screening compliance.

Responsibilities

• Perform DOT inspections and PM on light, medium and heavy‑duty vehicles in mobile/field environment.
• Diagnose and repair electrical, braking, cooling and engine systems.
• Document findings and parts used on RO via TRAIT app.
• Maintain safety checks and pre/post‑trip inspections.
• Coordinate with customers to obtain approvals on estimates.

Skills

DOT inspections

Preventive maintenance

Diagnostics

Electrical systems

Mechanical repair

Education

High School Diploma/GED

ASE T8 (PMI)

ASE 608/609

Tools

iOS device

TRAIT app

Job description

Cox Automotive is seeking a Sr. Mobile Diesel Technician to perform DOT inspections, preventative maintenance, and on-site repairs in a mobile/field setting.

You will diagnose complex mechanical, electrical and hydraulic systems, manage parts and documentation via TRAIT on an iOS device, and ensure safety and DOT compliance. This role requires independent scheduling and customer communication.