Senior Diesel Technician

About the role

We are seeking two to three highly skilled, proven Senior Diesel Technicians (Journeyman / Tech 1). As a Senior Diesel Technician at W.W. Williams, you will be the tech the shop calls when nobody else can find it: owning the hardest diagnostic work in the building, getting repairs right the first time, and helping junior technicians grow. This is a full-time, day-shift, on-site position.

W.W. Williams was founded in Columbus, Ohio, in 1912. Today The W.W. Williams Companies have a broad portfolio of businesses located throughout the U.S. and Mexico, including CT Power and Guaranteed Truck Service. The company offers a full range of industry-leading products, technical/mechanical service and repair, remanufacturing, and warehouse/supply chain management solutions. Products and services include diesel engines, transmissions, heavy duty truck repair, transport refrigeration, power generation, and third-party supply chain logistics services. Customers include on-highway truck fleets, off-highway equipment users, data centers, hospitals, Department of Defense OEMs, vehicle OEMs, U.S. Military, and boat owners. With multiple locations across the US and Mexico, W.W. Williams is one of the nation’s largest sales and service networks of industrial power products.

Responsibilities

• Own the toughest diagnostic jobs in the shop on fleet customers’ Detroit, Cummins and Allison-powered trucks.
• Diagnose, repair, road test and document repairs — get it right the first time.
• Serve as the go-to technician who helps junior techs get unstuck.

Requirements

• 7+ years as a journeyman / Tech 1 on Class 6–8 trucks.
• ASE Medium/Heavy Truck certified (full T2–T8 series).
• OEM certifications: Detroit (DTNA), Allison and/or Cummins.
• Strong electronic diagnostics: DiagnosticLink, Cummins INSITE, Allison DOC, laptop-based troubleshooting.
• Engine, aftertreatment (DPF/SCR), electrical and transmission repair, from diagnosis to road test.
• Own professional tool set and a valid driver’s license (CDL-A a plus).

Pay

Top-of-scale pay from day one, plus overtime. No starting at the bottom and earning your way back up.

Schedule

Full-time, day-shift, on-site position.

Benefits

• 8 Paid Holidays & 1 Paid Wellness Day
• Paid Time Off
• Employee Referral Bonus Program
• Medical, Dental & Vision Insurance
• 401k with Company Match
• Company Paid Training
• Growth & Leadership Opportunities
• Factory training: Detroit, Allison and Cummins OEM training, paid and scheduled in your first quarter
• Clear path to shop lead and top technician tier, backed by a regional network of branches across the East