Imagine spending hours crafting the perfect resume, tailoring it to the job description, polishing every bullet point — and then it never gets read by a human. This is the reality for more than 75% of job applicants today. The culprit? Applicant Tracking Systems (ATS).
In this complete guide, we'll break down exactly how ATS works, what it filters for, and how to format and write your resume to pass every automated checkpoint.
What Is an ATS and How Does It Work?
An Applicant Tracking System is software used by employers to collect, sort, and rank job applications automatically. When you hit "submit" on a job application, your resume is immediately parsed by the ATS — not read by a human.
The system extracts your contact information, job titles, dates, skills, and education. It then compares what it found against the requirements of the job posting and assigns you a relevance score. Candidates below a certain score are filtered out before any recruiter sees their application.
"The ATS doesn't care about your formatting — it cares about data. Give it clean, parseable data and you pass. Give it a beautifully designed but unreadable PDF and you fail."
The Top Reasons Resumes Fail ATS
- Wrong file format: Image-based PDFs, .pages files, or scanned documents cannot be parsed.
- Tables and columns: ATS parsers read left to right, top to bottom. Multi-column layouts jumble your content.
- Missing keywords: If your resume doesn't include the specific terms from the job posting, your score drops significantly.
- Non-standard section headers: Using "My Journey" instead of "Work Experience" confuses the system.
- Dates in wrong format: Stick to Month Year (e.g., March 2024 or 03/2024) consistently throughout.
- Contact info in headers/footers: ATS often ignores header/footer content entirely.
How to Find the Right Keywords
Keywords are the single most important factor in ATS scoring. Here's a simple process to identify them:
Step 1 — Analyze the Job Description
Read through the job posting carefully. Highlight every skill, technology, qualification, and responsibility mentioned. Pay attention to specific phrases — "project management" and "managing projects" may be scored differently by some systems.
Step 2 — Identify Repeated Terms
If a word or phrase appears more than once in the job description, it's almost certainly a priority keyword. Include it in your resume — preferably in multiple sections (summary, experience, and skills).
Step 3 — Use Exact Phrases, Not Synonyms
If the job says "customer success," don't write "client satisfaction" and assume it's equivalent. ATS systems often match exact phrases. Use the employer's language wherever possible.
ATS-Friendly Formatting Rules
File Type
Save your resume as a .docx (Word document) or a text-based PDF. Never submit a scanned document, image, or .pages file. When in doubt, .docx is the safest choice.
Fonts
Use standard, ATS-readable fonts: Calibri, Arial, Georgia, Garamond, or Times New Roman. Font size should be 10–12pt for body text and 14–16pt for your name. Avoid decorative or script fonts entirely.
Layout
Use a single-column layout. Avoid tables, text boxes, and multi-column designs. All information should flow in a simple top-to-bottom structure with clear section breaks.
Section Headers
Use standard, recognized section names that ATS systems are programmed to find:
- Work Experience (not "My Career" or "Professional Journey")
- Education (not "Academic Background")
- Skills (not "What I Know")
- Certifications or Licenses
- Summary or Professional Summary
Writing Achievement-Focused Bullet Points
ATS scans your bullet points for relevant experience. But when a human does read your resume, they want to see impact — not just responsibilities. Use this formula:
Action Verb + Task + Result (with numbers where possible)
✅ Strong: "Grew company Instagram following by 145% in 6 months by implementing a data-driven content strategy."
Checking Your Resume Against ATS
Before submitting any application, run your resume through an ATS checker. Our tool at Resumega analyzes your resume against common ATS criteria — checking keyword density, formatting issues, section completeness, and readability — then gives you an actionable score and specific improvements.