On-Site Mobile Diesel Fleet Technician

W.W.Williams Company; West Columbia (SC); On-site; USD 30,000 - 59,000; 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 Company 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.

You will create repair plans, estimate labor hours, and work with diagnostic software while upholding safety and EPA standards. The role requires 3+ years of diesel repair experience, a valid driver’s license, and DOT medical certification.

Qualifications

• 3+ years of diesel repair experience; 5–7 years preferred in fleet, dealership, or mobile technician environments.
• Valid Driver’s License and DOT Medical Card or ability to obtain.
• ASE Certifications: T4, T7, T8; MACS 609 or equivalent mobile A/C.
• Proficient in diagnosis across multiple systems (brake, emissions, electrical, HVAC).
• Strong communication and ability to work independently.

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, 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

ASE T4/T7/T8

DOT Medical Card

Driver's License

Diagnostic software

Microsoft Office

Communication

Education

Technical school certificate

Tools

Diagnostic software

MS Office

Job description

W.W. Williams Company 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.

You will create repair plans, estimate labor hours, and work with diagnostic software while upholding safety and EPA standards. The role requires 3+ years of diesel repair experience, a valid driver’s license, and DOT medical certification.