What Is an ATS? How Applicant Tracking Systems Read Your Resume

What an ATS is

An applicant tracking system (ATS) is the software employers and recruitment agencies use to collect, store and sort job applications. When you click "Apply" on a company careers page or a job board, your resume or CV almost always lands in one of these systems.

Common names include Workday, Oracle Taleo, SAP SuccessFactors, iCIMS, Greenhouse and Lever. In Australia and New Zealand you will also see PageUp, JobAdder and Bullhorn, especially with recruitment agencies. They all work a little differently, but the basics are the same.

What happens to your resume inside an ATS

1. It gets parsed. The system pulls the text out of your file and tries to sort it into fields: name, contact details, job titles, employers, dates, education and skills.
2. It gets stored as a profile. The recruiter often sees this extracted profile first, not your nicely designed document.
3. It gets searched and ranked. Recruiters filter and search by job title, skills, qualifications, location and keywords from the job ad. Some systems also score how closely each application matches the role.
4. A person reviews the shortlist. The applications that match best rise to the top and get read by a human.

The myth: "ATS rejects most resumes automatically"

You will see claims that software throws out most resumes before anyone looks. That is not really how most systems work. They rarely "reject" you on their own. The real risk is quieter: if your resume is parsed badly or is missing the words the recruiter searches for, it simply does not show up near the top. Nobody rejected it. Nobody found it.

Some employers do use knock-out questions, such as "Do you have the right to work in this country?" or "Do you hold a current licence?" Answer those honestly and carefully, because they can filter applications automatically.

What makes a resume hard for an ATS to read

• Text inside images, text boxes or graphics. If the words are not real text, the system may not see them at all.
• Contact details in the header or footer. Some parsers skip these areas, so your phone number and email can go missing.
• Unusual section headings. "My journey" or "Where I've been" are harder to recognise than "Work experience".
• Complex tables and layouts built the wrong way. Two-column designs can work, but only when they are built so the text reads in the right order.
• Inconsistent dates and job titles. Mixed date formats or titles buried in a paragraph make your history harder to extract.
• Scanned PDFs. A photo or scan of a resume is an image, not text.

What helps you rank well

• Use the words from the job ad. If the ad says "stakeholder management" and "Xero", and you have those skills, use those exact phrases. Our guide to resume keywords shows how.
• Put the job title you want near the top, in your headline or summary, if it truthfully fits your experience.
• Use standard headings: Summary, Skills, Work experience, Education, Certifications.
• Show results, not just duties. Software gets you found, but a person decides. See how to turn duties into achievements.
• Send the file type the employer asks for. A Word file or a text-based PDF is usually safest.

The quickest way to check yours

You can test your own resume by copying all the text from your file and pasting it into a plain text editor. If the order is jumbled, words are missing or your contact details vanish, an ATS is likely to have the same trouble. Or run our free ATS check, which looks for these problems and gives you a score out of 100 with your top fixes.