Mobile Fleet Technician

W.W.Williams; Portland (ME); On-site; USD 60,000 - 90,000; Full time

Benefits offered by this job

8 Paid Holidays & Wellness Day

Paid time off

Employee Referral Bonus

Medical, Dental, Vision Insurance

401(k) with Company Match

Company‑Paid Training

Growth and Leadership Opportunities

Job summary

W.Williams in Portland, ME is seeking a Mobile Fleet Technician to perform on-site preventive maintenance, diagnostics, and repairs on diesel engines and heavy-duty trucks at customer locations. This role requires strong diagnostic skills, safety awareness, and the ability to work independently in varying environments.

You will conduct inspections, plan repair work, document services, and support junior technicians. DOT compliance and high-quality workmanship are essential in this role.

Qualifications

• 3+ years of diesel repair experience in fleet, dealership, or mobile technician settings.
• Certificate from a technical school or equivalent hands-on experience.
• Valid Driver’s License and DOT Medical Card (or ability to obtain).
• ASE Certifications: T4, T7, T8 and MACS 609 or equivalent A/C certification.
• Strong diagnostic and troubleshooting skills across brake, emissions, electrical, and HVAC systems.
• Ability to plan repairs and manage parts reuse.

Responsibilities

• Perform on-site repairs and preventive maintenance on diesel engines and heavy‑duty trucks per manufacturer specs.
• Conduct thorough vehicle inspections to identify worn or damaged parts.
• Create and execute repair plans, estimating labor hours and parts needed.
• Diagnose and repair electrical, A/C, emissions, and other diesel components.
• Complete PM services, DOT inspections, and accurate documentation.
• Use diagnostic software and follow electronic repair procedures.
• Maintain clean, safe work areas on customer sites and in the company vehicle.
• Keep accurate records for invoicing and warranty claims.
• Utilize company tools and maintain personal tool inventory per policy.
• Support and train junior technicians as needed.
• Adhere to safety, EPA, and company policies.

Skills

Diesel repair

Fleet maintenance

Diagnostics

Customer service

Electrical systems

A/C systems

DOT compliance

Documentation

Education

Technical school certificate

Job description

Mobile Fleet Technician Opportunity Summary

The Mobile Fleet Technician is responsible for performing on-site preventive maintenance, inspections, diagnostics, and repairs on diesel engines and heavy-duty trucks at customer locations. This role demands technical proficiency, a customer‑first mindset, and the ability to work independently in various environments and weather conditions. The technician will ensure compliance with DOT standards and internal repair quality expectations.

Job Duties

• 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.

Work Experience And 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.
• Strong diagnostic and troubleshooting skills across multiple systems (brake, emissions, electrical, HVAC).
• Familiarity with repair planning and parts reuse.
• Proficient in Microsoft Office and diagnostic software.
• Clear written and verbal communication.
• Ability to work in physically demanding environments.

Work Environment & Physical Demands

Frequently exposed to moving mechanical parts, outdoor conditions, high temperatures, cold, humidity, and airborne particles. Regularly requires standing, walking, climbing, kneeling, and lifting up to 50 lbs. Work is performed primarily on second shift and may require nights or weekends.

Employee Rewards and Benefits

• 8 Paid Holidays & 1 Paid Wellness Day
• Paid time off
• Employee Referral Bonus Program
• Medical, Dental, and Vision Insurance
• 401(k) with a Company Match
• Company‑Paid Training
• Growth and Leadership Opportunities

Competitive wages and benefits. AAP/EPE/M/F/Vets/Disabled, DFWP.