Senior Diesel Technician
About The Position
W.W. Williams is seeking two to three highly skilled Senior Diesel Technicians (Journeyman / Tech 1) to perform advanced diagnostic and repair work on Class 6–8 trucks powered by Detroit, Cummins, and Allison. The technician will handle the shop’s most challenging diagnostic jobs, complete repairs correctly the first time, road-test and document work, and support junior technicians. This is a full-time, day-shift, on-site position. It is not an entry-level role; candidates who are still building their skills are directed to the Diesel Technician posting instead. The position offers top-of-scale pay from day one, plus overtime, factory training from Detroit, Allison, and Cummins that is paid and scheduled during the first quarter, and a potential path to shop lead and the company’s top technician tier. W.W. Williams provides technical and mechanical service and repair, remanufacturing, and warehouse and supply chain management solutions across a broad range of industries. The company describes its workplace as welcoming, diverse, and inclusive, and offers training and development opportunities.
Requirements
- At least 7 years of experience as a journeyman / Tech 1 working on Class 6–8 trucks.
- ASE Medium/Heavy Truck certification across the full T2–T8 series.
- OEM certifications in Detroit (DTNA), Allison, and/or Cummins.
- Strong electronic diagnostic skills, including DiagnosticLink, Cummins INSITE, Allison DOC, and laptop-based troubleshooting.
- Experience diagnosing and repairing engines, aftertreatment (DPF/SCR), electrical systems, and transmissions.
- Own professional tool set.
- Valid driver’s license.
Nice To Haves
- CDL-A license.
Responsibilities
- Own the shop’s most difficult diagnostic jobs on fleet customers’ Detroit-, Cummins-, and Allison-powered trucks.
- Diagnose and repair trucks, road-test completed repairs, and document the work.
- Perform engine, aftertreatment (DPF/SCR), electrical, and transmission repairs, from diagnosis through road test.
- Help junior technicians resolve difficult repair and diagnostic issues.
Benefits
- Top-of-scale pay from day one.
- Overtime pay.
- Paid factory training from Detroit, Allison, and Cummins, scheduled during the first quarter.
- 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 company match.
- Company-paid training.
- Growth and leadership opportunities.
Stand Out From the Crowd
Upload your resume and get instant feedback on how well it matches this job.
What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
