How ATS Works & How to Write a Resume That Gets Past It

You applied. You never heard back. Chances are, a human never saw your resume. Here's why — and what you can do about it.

What Is an ATS?

An Applicant Tracking System (ATS) is software that companies use to receive, store, and filter job applications. When you apply online, your resume is parsed by the ATS before a recruiter ever sees it. The system ranks applicants based on how well their resume matches the job description.

Over 75% of large companies use an ATS. Most mid-sized companies do too. The ATS filter is the first — and often only — screening most resumes go through.

How ATS Parses Your Resume

The ATS reads your resume like a simple text document. It extracts:

• Contact information
• Work experience (company, title, dates, description)
• Education (degree, institution, graduation year)
• Skills

It then compares the keywords and phrases in your resume to the keywords in the job description. The closer the match, the higher your score. Resumes below a threshold score are filtered out automatically.

What Confuses ATS Systems

ATS parsers are simpler than you'd think. These common resume choices break parsing:

• Tables and columns — the parser reads left-to-right and gets confused
• Headers and footers — often ignored entirely
• Images, charts, icons — unreadable
• Unusual section names — "Where I've Worked" instead of "Experience" trips up parsers
• PDF with text as image — totally unreadable; always use text-based PDF

The ATS-Friendly Resume Format

Follow these rules for an ATS-safe resume:

1. Use a single-column layout
2. Use standard section headings: Summary, Experience, Education, Skills
3. Save as a text-based PDF or Word document
4. Use standard fonts (Arial, Calibri, Georgia, Garamond)
5. Avoid tables, text boxes, and graphics

How to Match Keywords

This is where most freshers lose. Here's the process:

1. Copy the full job description into a word frequency tool (e.g., WordCounter.net)
2. Identify the top 10–15 non-generic keywords — skills, tools, certifications, role-specific terms
3. Check which of those keywords appear in your resume
4. For each missing keyword that you genuinely have the skill for, add it — in context, not as a keyword dump

Do this for each job you apply to. Don't use the same resume for every application — tailor it every time.

The Human Test

Once your resume passes the ATS, it reaches a human recruiter. Make sure it's also good for a 6-second human scan: clear formatting, strong summary at the top, and 2–3 bullet points per role that lead with results and numbers.

Pass both tests and your callback rate goes up significantly. Huntlyy automates the keyword matching — it analyzes your resume against each matched job and tells you exactly what to add, remove, or reframe.