Mobile Fleet Technician
About The Position
The Mobile Fleet Technician performs on-site preventive maintenance, inspections, diagnostics, and repairs on diesel engines and heavy-duty trucks at customer locations. The role requires technical proficiency, a customer-first mindset, and the ability to work independently in varied environments and weather conditions while meeting DOT standards and internal repair-quality expectations. Work is performed primarily on second shift and may require nights or weekends. W.W. Williams provides technical and mechanical service and repair, remanufacturing, and warehouse and supply-chain management solutions to customers across the United States and Mexico. Its products and services include diesel engines, transmissions, heavy-duty truck repair, transport refrigeration, power generation, and third-party supply-chain logistics. The company emphasizes reliable service, training and development, and a welcoming, diverse, and inclusive environment.
Requirements
- At least 3 years of diesel repair experience.
- A technical-school certificate or equivalent hands-on experience.
- Valid driver's license.
- DOT Medical Card, or ability to obtain one.
- ASE certifications T4 (Brakes), T7 (HVAC), and T8 (PM).
- MACS 609 or equivalent mobile air-conditioning certification.
- Strong diagnostic and troubleshooting skills across brake, emissions, electrical, and HVAC systems.
- Familiarity with repair planning and parts reuse.
- Proficiency with Microsoft Office and diagnostic software.
- Clear written and verbal communication skills.
- Ability to work in physically demanding environments.
Nice To Haves
- 5–7 years of diesel repair experience, preferably in fleet, dealership, or mobile-technician environments.
Responsibilities
- Perform quality repairs and preventive maintenance on diesel engines and heavy-duty trucks according to manufacturer specifications.
- Inspect vehicles to identify damaged, worn, or broken parts.
- Develop and execute repair plans based on diagnostics, including estimating labor hours and required parts.
- Diagnose and repair electrical systems, air-conditioning systems, emissions controls, and other diesel-engine components.
- Complete preventive-maintenance services and DOT inspections, and document work accurately and thoroughly.
- Use diagnostic software and follow electronic repair procedures.
- Maintain a clean and safe work area at customer sites and in the company vehicle.
- Maintain accurate records for invoicing and warranty claims.
- Use company tools appropriately and maintain a personal tool inventory according to company policy.
- Support and train junior technicians as needed.
- Follow safety, EPA, and company policies.
Benefits
- 8 paid holidays and 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
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
