Senior Diesel Technician

Senior Diesel Technician Opportunity Summary:

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.

Must Have:

This is not an entry-level job. If you're still building your skills, please apply to our Diesel Technician posting instead.

• 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.
• Your own professional tool set and a valid driver's license (CDL-A a plus).

Why Senior Techs Move Here:

• Paid like the senior tech you are: Top-of-scale pay from day one, plus overtime. No starting at the bottom and earning your way back up.
• The work you're good at: No-starts, intermittent electrical, aftertreatment and drivability. You're the diagnostician, not the oil-change bay.
• Factory training, on us: Detroit, Allison and Cummins OEM training, paid and scheduled in your first quarter.
• Somewhere to go: A clear path to shop lead and our top technician tier, backed by a regional network of branches across the East.

What You'll Do:

• Own the toughest diagnostic jobs in the shop on fleet customers' Detroit, Cummins and Allison-powered trucks.
• Get it right the first time: diagnose, repair, road test and document it.
• Be the go-to tech who helps junior techs get unstuck.

Our Hiring Promise:

• A phone call within 48 hours of applying.
• A shop visit and interview within 5 days.
• An offer within 48 hours of your interview.

Benefits and Rewards:

• 8 Paid Holidays & 1 Paid Wellness Day
• Paid Time Off
• Employee Referral Bonus Program
• Medical, Dental & Vision Insurance
• 401k with a Company Match
• Company Paid Training
• Growth & Leadership Opportunities

About the Company:

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. The W.W. Williams Companies include CT Power and Guaranteed Truck Service. W.W. Williams offers a full range of industry-leading products, while providing technical/mechanical service and repair, remanufacturing and warehouse/supply chain management solutions to a varied customer base. Our products and services include diesel engines, transmissions, heavy duty truck repair, transport refrigeration, power generation and third-party supply chain logistics services. Our 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 to name a few.


What began as a small family-owned business has evolved into one of the nation's most diversified solutions provider. We are relentlessly dedicated to helping our customers achieve maximum up time. From single trucking to cranes to fleet management to power generators to military and commercial packaging - consider it done.


We are Genuine. Honest. Passionate. That's not a slogan, it's a mantra. Everyone who wears the W.W. Williams name - from service technicians to advisors to business executives - is committed to getting the job done right, the first time around. Our people are our greatest assets; we support our team with access to world class training and development opportunities. It's this level of investment and care that matters to customers, giving you peace of mind that your fleet is in the right hands.


W.W. Williams is one of the nation's largest sales and service networks of industrial power products. With multiple locations across the US and Mexico, we are dedicated to providing highly professional service and strong relationships with our customers.

Join us for a career where you'll grow both personally and professionally in a welcoming, diverse, and inclusive environment.

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