Mobile Diesel Fleet Tech – On-Site Repairs & Diagnostics

W.W.Williams; Ladson (SC); On-site; USD 55,000 - 75,000; Full time

Benefits offered by this job

8 Paid Holidays

PTO

Medical, Dental, Vision Insurance

401k with 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, diagnostics, and repairs on diesel engines and heavy-duty trucks at customer locations.

The role requires 3+ years of diesel repair experience, a valid driver’s license, and ASE/MACS certifications. You will work second shift with potential night/weekend hours and contribute to safety compliance and high repair quality.

Qualifications

• 3+ years of diesel repair experience; 5–7 years preferred in fleet, dealership, or mobile technician environments.
• Certificate from a technical school or equivalent hands‑on experience.
• Valid Driver’s License; DOT Medical Card (or ability to obtain).
• ASE Certifications: T4 (Brakes), T7 (HVAC), T8 (PM).
• MACS 609 or equivalent mobile A/C certification.

Responsibilities

• Perform quality repairs and preventive maintenance on diesel engines and heavy-duty trucks per manufacturer specifications.
• Conduct thorough vehicle inspections to identify damaged, worn, or broken parts.
• Create and execute job 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 on customer sites and in the company vehicle.
• Maintain accurate records for invoicing and warranty claims.
• Utilize company tools and maintain a personal tool inventory per policy.
• Support and train junior technicians as needed.
• Adhere to all safety, EPA, and company policies.

Skills

Diesel repair

Diagnostics

Safety compliance

Electrical systems

A/C systems

Problem solving

Team mentorship

Education

Technical school certificate

Tools

Diagnostic software

Microsoft Office

Job description

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

The role requires 3+ years of diesel repair experience, a valid driver’s license, and ASE/MACS certifications. You will work second shift with potential night/weekend hours and contribute to safety compliance and high repair quality.