Mobile Fleet Technician: Field Diesel Diagnostics & Repairs

El Pollo Loco, Inc.; Montgomery (AL); On-site; USD 65,000 - 90,000; Full time

Benefits offered by this job

8 Paid Holidays & 1 Paid Wellness Day

Paid time off

Employee Referral Bonus Program

Medical, Dental, and Vision Insurance

401k with a Company Match

Company Paid Training

Growth and Leadership Opportunities

Job summary

W.W. Williams is seeking a Mobile Fleet Technician to perform on-site preventive maintenance, inspections and repairs on diesel engines and heavy-duty trucks at customer locations.

The role requires strong diagnostics skills and the ability to work independently under varying conditions, while ensuring DOT compliance and high repair quality. Applicants should have 3+ years in diesel repair, valid driver's license, DOT medical card, and ASE/MACS 609 certs or equivalent.

Qualifications

• 3+ years of diesel repair; 5–7 years preferred in fleet/mobile settings.
• Technical school certificate or equivalent hands-on experience.
• Valid Driver's License and DOT Medical Card (or ability to obtain).
• ASE T4, T7, T8 certifications or MACS 609 (mobile A/C).

Responsibilities

• Perform quality repairs and preventive maintenance on diesel engines and heavy-duty trucks per manufacturer specifications.
• Inspect vehicles to identify damaged, worn, or broken parts.
• Create and execute repair plans based on diagnostics, including estimating labor hours and required parts.
• Diagnose and repair electrical systems, A/C systems, emissions controls, and other diesel engine components.
• Complete PM services, DOT inspections, and documentation accurately and thoroughly.
• Use diagnostic software and follow electronic repair procedures.
• Maintain a clean and safe work area, both on customer sites and in the company vehicle.
• Maintain accurate records for invoicing and warranty claims.
• Utilize company tools appropriately and maintain a personal tool inventory per company policy.
• Support and train junior technicians as needed.
• Adhere to all safety, EPA, and company policies.

Skills

Diesel repair

Diagnostics

Electrical systems

Communication

Customer service

Education

Technical school certificate

Valid Driver's License

DOT Medical Card

ASE T4/T7/T8 or MACS 609

Tools

Diagnostic software

Microsoft Office

Repair planning tools

Job description

W.W. Williams is seeking a Mobile Fleet Technician to perform on-site preventive maintenance, inspections and repairs on diesel engines and heavy-duty trucks at customer locations.

The role requires strong diagnostics skills and the ability to work independently under varying conditions, while ensuring DOT compliance and high repair quality. Applicants should have 3+ years in diesel repair, valid driver's license, DOT medical card, and ASE/MACS 609 certs or equivalent.