What is an applicant tracking system (ATS)?

An applicant tracking system is the software an employer uses to receive job applications, store them and move candidates through hiring. When you apply on a company's careers page, your CV almost always lands in one before a recruiter opens it.

Answers checked 11 November 2026 by the ATSJudo team at Wolfe Labs.

What does an applicant tracking system do?

An applicant tracking system collects every application for a role in one place, turns each CV into a searchable candidate record, and lets the hiring team screen, rate, message and move candidates through stages such as screening, interview and offer. It also keeps the records an employer needs for reporting and compliance.

Most systems share the same core features:

• A careers page and application form, often with screening questions about location, right to work or notice period.
• CV parsing: the file you upload is read and split into fields such as name, contact details, employers, job titles, dates, education and skills.
• Search and filters, so a recruiter can find candidates by keyword, location or their answer to a screening question.
• A pipeline of stages, with notes and ratings shared by everyone on the hiring team.
• Messages and scheduling: email templates, interview invitations and offer letters.

Some of the most common systems, and the web address their application pages usually sit on, are below. The address in your browser when you apply is often the quickest way to tell which one an employer uses.

Large employers also use systems such as iCIMS, Oracle Taleo and SAP SuccessFactors, which often sit behind the company's own careers domain.

Does an ATS reject CVs automatically?

Usually not on its own. In most setups a person reviews or searches the applications, but employers can set knockout questions, such as the right to work in a country or a required licence, that filter applicants out automatically. Some systems also rank or score candidates, and how much that counts depends on how each employer uses it.

You may read that most CVs are rejected by software before anyone sees them. Those figures are rarely traced to a published study, so treat them with care. The practical risks are more ordinary:

• The parser misreads your CV, so your candidate record has missing or jumbled fields.
• A recruiter searches for a term you phrased differently, for example 'customer success' when you wrote 'client care', and your record does not come up.
• You answer a screening question in a way that closes the application, sometimes without meaning to.

All three are within your control: a clean layout, the posting's own words where they are true for you, and careful answers to the form.

How does an ATS read a CV?

The ATS extracts the text from your file, then a parser works out which parts are your contact details, job titles, employers, dates, education and skills. Plain layouts parse best. Text inside images, text boxes, tables, multiple columns or page headers is the most likely to be lost, misplaced or merged with other text.

Two quick checks catch most problems:

• The paste test. Open your PDF, select all the text and paste it into a plain text editor. If the order is wrong or pieces are missing, a parser may struggle too.
• The form check. Many application forms fill in fields from your CV after you upload it. Read what they filled in and correct it before you submit, because that is what the recruiter's record will show.

The guide on how to make a CV ATS-friendly covers layout, headings, file types and keywords in detail.

How does ATSJudo work with applicant tracking systems?

ATSJudo reads public job postings on company career sites run by ATS platforms such as Greenhouse, Lever, Ashby and Workday, and on job boards. It scores each opening against your CV, then writes a tailored, ATS-ready CV and cover letter from your own facts. It cannot promise any outcome: a person still decides.

Tailoring changes the order and wording of your real experience, never the facts. The method is set out in how to tailor a CV to a job description without inventing anything, and every application then sits on one board, as described in how to track job applications and replies.

What else do people ask about applicant tracking systems?