Why This Resume Works
This resume scores well with ATS systems and fleet maintenance hiring managers because it follows three principles:
Fleet size, uptime rate, work orders per week, and inspection volumes. Every bullet proves reliability and capacity.
Specific ASE test codes (T2, T4, T5) and engine platforms listed where ATS scanners and shop managers find them first.
Standard section headings that ATS parsers expect. No tables, columns, or graphics that break parsing.
Section-by-Section Breakdown
Summary
Lead with your ASE certifications and years of experience. Include the fleet size you maintained, your uptime rate, and the engine platforms you specialize in. Fleet managers and shop supervisors want proof that you can keep their trucks running.
Skills & Certifications
Group by category: certifications first, then engine platforms, systems, and diagnostic tools. List each ASE certification with its test code. ATS systems match these against job posting requirements word for word.
Tip: List specific diagnostic software by name (Cummins INSITE, Detroit DDDL, Cat ET). Many postings require experience with a particular OEM platform.
Experience
Use this formula for every bullet point:
Start bullets with strong verbs: Performed, Diagnosed, Repaired, Reduced, Maintained, Completed, Mentored. Avoid "Responsible for" or "Helped with" when you can describe your direct contribution instead.
3-5 bullets per role. Lead with your most impressive fleet uptime or repair efficiency metric.
Education
For diesel mechanics with field experience, education goes last. Include your diesel technology certificate or associate degree. If you completed OEM-specific training programs (Cummins, Detroit, etc.), list them here as well.
Key Skills for Diesel Mechanic Resumes
Based on analysis of diesel mechanic and fleet technician job postings, these are the most frequently required skills and certifications:
Common Mistakes on Diesel Mechanic Resumes
- ⚠Listing "repaired trucks" without volume or outcomes - "Repaired diesel engines" does not show your capacity. "Completed 2,500+ repair orders across Peterbilt, Kenworth, and International trucks" proves your workload and range.
- ⚠Writing "ASE certified" without test codes - shops hiring for specific roles need to know which ASE tests you passed. List T2, T4, T5, etc. so ATS systems can match you to the right posting.
- ⚠Leaving out diagnostic tool experience - modern shops require OEM diagnostic software. If you know Cummins INSITE, Detroit DDDL, or Cat ET, list each one by name.
- ⚠Not mentioning fleet uptime or breakdown reduction - fleet managers measure success by uptime percentage and breakdown frequency. If you improved either metric, make it a headline bullet with the specific numbers.