- Maintained a 220-unit Class 8 fleet, averaging 52 flagged hours per week against a 40-hour schedule
- Diagnosed and repaired DPF, SCR and EGR faults on 180 units, cutting derate-related tows by 34 per cent
- Held a 3 per cent comeback rate across roughly 900 repair orders over three years
Diesel Mechanic Resume Example
Fleet shops screen diesel resumes on ASE series, engine families and whether you own your tools. Diagnostic ability is the premium skill, so quantify it: comeback rate, first-time fix and hours flagged against hours worked say more than a list of parts you have replaced. Aftertreatment and emissions work is where most shops are short-handed right now.
Summary
Diesel technician with 8 years on Class 7 and 8 fleet equipment, specialising in electrical diagnostics and aftertreatment. Averages 52 flagged hours per 40-hour week with a 3 per cent comeback rate across a 220-unit fleet.
Experience
- Performed 600 preventive maintenance services on Cummins ISX and Detroit DD15 engines
- Completed DOT annual inspections on roughly 240 vehicles as a certified inspector
Skills
Education
Certifications
- ASE Master Medium and Heavy Truck, T1 to T8
- ASE L2 Electronic Diesel Engine Diagnosis Specialist
- Federal Brake Inspector, 49 CFR 396.25
- EPA 609 Refrigerant Handling
Here is how to write your own, and what actually gets you the call in this trade.
What a foreman looks at first
The first pass answers two practical questions: can you legally do this work, and are you free to start. A foreman with a job beginning next week reads for the licence, the current tickets and the availability, and everything else on the page waits behind those.
Licences, tickets and safety training
Industry certifications for medium and heavy truck systems are recognised and held by area. A commercial driver licence is frequently required to road-test vehicles. Refrigerant certification applies to climate systems, and brake work carries specific requirements in some jurisdictions.
How you actually get hired for this
Fleet and dealership employers hire on platform experience and diagnostic capability, and often set a practical test. Roadside and shift availability are discussed early. Because downtime is expensive, employers ask about turnaround times and repeat repairs.
What you built, at what scale, safely
Describe the work in the units the trade uses: square footage, linear feet, tonnage, service calls per day, machines run, crew size. Add safety record and callback rate if you have them, because on a job site those are worth as much as speed. If you have run a crew or trained apprentices, say so plainly — that is the difference between a hand and a lead.
Mistakes that cost diesel mechanic candidates interviews
- Listing ASE certification without naming the T-series tests, so a shop cannot tell if you are a B-level or Master tech
- Describing parts replaced instead of faults diagnosed, which makes you look like a parts changer rather than a diagnostician
- Omitting flat-rate hours and comeback rate, the two figures service managers use to set your pay grade
The top of the page: licence, tickets and what you can run
A foreman reading this has a job starting Monday. Put your licence class, your certifications with their dates, and the equipment you can operate at the very top — above the work history — because that is the information that decides whether you get the call. Save the paragraph-style summary for one or two lines at most.
Moving up in this trade
Technician to lead or shop foreman, then fleet maintenance management or field service engineering. Electronic diagnostics and emissions systems expertise are the most valuable specialisms.
Before you send it
Check every certification date is current and every licence number is right, since these are verified and an expired ticket ends an application. Keep the file simple: one column, no graphics, no tables. Our free ATS checker will confirm it parses, which matters because large contractors and staffing agencies screen automatically.
More Examples in This Field
Diesel Mechanic Resume Questions
What should a diesel mechanic resume include?
Licence class, current tickets with their dates, and the equipment you can operate — all of it above the work history — then jobs described in the units the trade uses, your safety record, and any crew or apprentice responsibility. One page, one column, no graphics.
What certifications do I need on a diesel mechanic resume?
Which tickets are required depends on the trade, the jurisdiction and the site, and the posting sets it out. Whatever you hold matters more than anything else on the page, so list every one with its issue and expiry date — these are verified, and an expired certification ends an application regardless of the work history behind it.
How is hiring for diesel mechanic roles different?
Hiring in the trades is fast and often informal — a call, a short conversation, sometimes a day on site to see how you work. Referral and reputation count for more than in most fields, so how you leave one job affects the next one.
What do hiring managers look at first on a diesel mechanic resume?
Your licence class, your current tickets, and when you can start. A foreman with a job beginning next week reads for whether you are legally able to do the work and free to do it, and the rest of the page waits behind those two answers.
Where does a diesel mechanic career usually go next?
The usual route runs from apprentice to journey level to lead hand or foreman, and from there into supervision, estimating or running your own work. Crew leadership and apprentice training are the lines that show you are ready for that step.
How long should this resume be?
One page. Employers in this field read quickly and often on a phone, and a second page rarely gets opened. Cut old short-term roles before you cut certifications or equipment experience.
Can I use this example as a template?
Use the structure and the way each achievement is phrased, but write your own content. The names and employers here are fictional, and a resume describing work you did not do will not survive an interview.
Build Your Diesel Mechanic Resume
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