Senior Diesel Technician
About The Position
W.W. Williams is hiring two to three Senior Diesel Technicians (Journeyman / Tech 1) to handle the shop’s most complex diagnostic and repair work on Class 6–8 trucks. This is a full-time, day-shift, on-site position. The role focuses on accurate first-time repairs, thorough diagnostics, road testing, and documenting work, while also supporting the development of junior technicians. This is not an entry-level position. Technicians will work on fleet customers’ Detroit-, Cummins-, and Allison-powered trucks. The company offers top-of-scale pay from day one plus overtime, paid OEM training scheduled during the first quarter, and a potential career path to shop lead and the top technician tier. The hiring process promises a phone call within 48 hours of applying, a shop visit and interview within five days, and an offer within 48 hours of the interview. W.W. Williams is a diversified provider of industrial power products and related services, including diesel engines, transmissions, heavy-duty truck repair, transport refrigeration, power generation, and supply-chain logistics. Founded in Columbus, Ohio, in 1912, the company operates across the United States and Mexico and emphasizes technical training, development, and a welcoming, diverse, and inclusive environment.
Requirements
- At least 7 years of experience as a journeyman / Tech 1 working on Class 6–8 trucks.
- ASE Medium/Heavy Truck certification covering the full T2–T8 series.
- OEM certifications in Detroit (DTNA), Allison, and/or Cummins.
- Strong electronic diagnostic skills, including experience with DiagnosticLink, Cummins INSITE, Allison DOC, and laptop-based troubleshooting.
- Experience diagnosing and repairing engines, aftertreatment systems (DPF/SCR), electrical systems, and transmissions, including road testing.
- Own professional tool set.
- Valid driver’s license.
Nice To Haves
- CDL-A.
Responsibilities
- Take ownership of the shop’s most difficult diagnostic jobs on fleet customers’ Detroit-, Cummins-, and Allison-powered trucks.
- Diagnose and repair trucks, road test completed work, and document repairs to achieve accurate first-time fixes.
- Assist junior technicians with troubleshooting and help them resolve difficult technical problems.
- Perform engine, aftertreatment (DPF/SCR), electrical, and transmission diagnosis and repair.
Benefits
- Top-of-scale pay from day one.
- Overtime.
- Paid Detroit, Allison, and Cummins OEM training, scheduled during the first quarter.
- Clear path to shop lead and the top technician tier.
- 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
Senior
Education Level
No Education Listed
