Senior Diesel Technician
W.W.Williams Company•Portland, ME
•Onsite
About The Position
W.W. Williams is hiring two to three experienced Senior Diesel Technicians (Journeyman / Tech 1) for a full-time, day-shift, on-site role. The senior technician owns the shop’s most challenging diagnostic work, completes repairs correctly the first time, and helps junior technicians develop. The role focuses on fleet customers’ Class 6–8 trucks powered by Detroit, Cummins, and Allison systems. Top-of-scale pay is offered from day one, with overtime, paid OEM training scheduled during the first quarter, and a path to shop lead and the top technician tier.
Requirements
- At least 7 years as a journeyman / Tech 1 working on Class 6–8 trucks.
- ASE Medium/Heavy Truck certification covering the full T2–T8 series.
- OEM certifications from 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, through road testing.
- Own professional tool set and a valid driver’s license; CDL-A is a plus.
Nice To Haves
- CDL-A.
Responsibilities
- Take ownership of the shop’s most challenging diagnostic jobs on fleet customers’ Detroit-, Cummins-, and Allison-powered trucks.
- Diagnose and repair vehicles, road-test completed work, and document repairs.
- Work on engine, aftertreatment (DPF/SCR), electrical, and transmission issues, including no-start, intermittent electrical, aftertreatment, and drivability problems.
- Help junior technicians resolve difficult technical problems.
Benefits
- Top-of-scale pay from day one.
- Overtime.
- Paid Detroit, Allison, and Cummins OEM training, scheduled during the first quarter.
- Growth 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.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
