What is ATS? How to Make Your Resume Beat Applicant Tracking Systems

If you've been applying for jobs and not hearing back, there's a good chance your resume never made it to human eyes. Most medium and large companies use an Applicant Tracking System (ATS) to filter applications automatically before a recruiter ever sees them. Studies suggest that up to 75% of resumes are rejected by ATS before a human reviews them.

This guide explains exactly how ATS works — and what you can do to make sure your resume gets through.

What is an Applicant Tracking System?

An Applicant Tracking System is software that companies use to collect, sort, and screen job applications automatically. When you submit your resume online, it typically goes straight into an ATS — not into a recruiter's inbox.

The ATS scans your resume for:

• Keywords that match the job description
• Job titles and career progression
• Skills and qualifications
• Education and certifications
• Dates and employment history

If your resume scores below the ATS's threshold, it gets filtered out. The recruiter may never know you applied.

Why Your Resume Gets Rejected by ATS

1. Missing keywords from the job description

ATS systems match the words in your resume against the words in the job posting. If the job requires "project management" and your resume says "overseeing projects," the ATS may not make the connection.

Fix: Mirror key phrases directly from the job description. If they write "stakeholder management," use that exact phrase.

2. Incompatible file format

Some ATS systems struggle with PDFs created from design tools like Canva or InDesign, and with Word files that contain text boxes or columns.

Fix: Use a clean, simple .docx or standard PDF. Avoid tables, columns, text boxes, and graphics in the main content of your resume.

3. Non-standard section headings

ATS systems look for sections like "Work Experience," "Education," and "Skills." If you name them something creative — "My Journey" or "What I Bring" — the ATS may not recognise them.

Fix: Use standard headings. Save your creativity for the content.

4. Missing required qualifications

If the job requires a specific degree or certification and it's not clearly stated in your resume, the ATS will likely filter it out automatically.

Fix: List your qualifications explicitly, including abbreviations (e.g., "Bachelor of Science (BSc)" not just "BSc").

5. No tailoring per role

Sending the same resume to every job is the most common mistake. Each job posting is essentially a list of keywords the ATS will search for — and a generic resume will miss most of them.

How to Optimise Your Resume for ATS

Step 1: Read the job description as a keyword list

Highlight every skill, tool, qualification, and phrase that appears more than once. These are what the ATS is specifically checking for.

Step 2: Mirror the employer's language

Use the same terminology they use. If they say "cross-functional collaboration," write that — not "working across teams." If they say "KPI reporting," don't substitute "tracking performance metrics."

Step 3: Keep formatting simple

Use:
* Standard fonts (Arial, Calibri, Times New Roman)
* Clear section headings
* Single-column layout
* Simple bullet points

Avoid:
* Headers and footers (ATS often can't read them)
* Tables and multi-column layouts
* Images, logos, or charts
* Text boxes

Step 4: Write out both full terms and abbreviations

Write "Search Engine Optimisation (SEO)" so the ATS catches both variants. Same for "Artificial Intelligence (AI)" or "Project Management Professional (PMP)."

Step 5: Use action verbs paired with numbers

ATS systems also detect impact signals. Strong verbs like "increased," "reduced," "launched," and "managed" paired with real numbers — percentages, revenue, team sizes — mark a resume as substantive.

What ATS Systems Can't Evaluate

ATS filters for relevance, not quality. A resume that passes ATS may still be weak when a human reads it. You need both:

1. ATS optimisation — to get past the filter
2. Human optimisation — compelling language, clear achievements, and professional presentation

This is exactly why Aycabtu first analyses your existing resume for ATS gaps, then generates a version tailored specifically to the job description you're targeting — so you're not left guessing which keywords matter.

Common ATS Myths

Myth: Stuffing your resume with keywords will trick the ATS.
Reality: Modern ATS systems flag keyword stuffing. Recruiters who read shortlisted resumes also notice it — and it reads as spam.

Myth: A visually impressive resume will stand out.
Reality: Visually complex resumes are often unreadable by ATS. A beautifully designed resume that never gets seen helps no one.

Myth: Only big companies use ATS.
Reality: Even small companies often receive applications through platforms like LinkedIn, Indeed, or Workable — all of which use ATS. You may be going through one without knowing it.

The Bottom Line

ATS is a gatekeeping system, not a perfect judge of talent. Your job is to get past it so a real person can evaluate your actual skills. That means tailoring your resume to each job description, using clean formatting, and mirroring the language of the posting.

The good news: once you understand how it works, beating ATS is a learnable skill — or you can let AI do the heavy lifting by generating a fully optimised, ATS-ready resume from your LinkedIn profile and the target job description.