What is an applicant tracking system (ATS)?
An applicant tracking system, or ATS, is software employers use to receive, organise, search and move job applications through a hiring process. Different employers configure different systems, so there is no universal ATS pass mark.
Published 25 July 2026 · Reviewed 25 July 2026
What does an ATS do during recruitment?
An ATS provides the working record behind a hiring process. It can store the vacancy, candidate details, uploaded documents, screening answers, interview stages and notes from the hiring team. Larger employers may connect it to assessment, scheduling or reporting tools.
Some systems let recruiters search or filter applications by fields and terms. Others primarily organise the workflow. The software does not remove the human process, and its behaviour depends on the employer's configuration.
- Collects applications and attached documents
- Stores contact details and screening answers
- Tracks stages such as review, interview and offer
- Supports search, filtering and team collaboration
Can an ATS reject a CV automatically?
An employer can configure knockout questions or automated rules, but not every ATS uses them and not every rejection comes from software. A missing legal entitlement, mandatory licence or required answer may trigger a rule; a recruiter may also make a manual decision.
Applicants usually cannot see the employer's rules. Claims that a public checker can reproduce the exact employer score are therefore misleading. A responsible check focuses on common compatibility factors the applicant can improve.
What makes a CV easier for an ATS to read?
Recognisable headings, readable text, ordinary bullet points and a clear chronology reduce avoidable parsing problems. Important evidence should appear in text rather than only inside decorative graphics. Contact details and dates should be easy to identify.
That does not mean every CV must look identical. The practical test is whether the text survives extraction in the right order and remains understandable without relying on design alone.
How should job keywords be used?
Use the employer's terminology where it accurately describes real experience. A role asking for stakeholder management may be supported by evidence of coordinating clients, clinical teams or department leads even when the old CV used different wording.
Do not paste every phrase into a skills list. Employer branding, incidental words and requirements the applicant does not meet are not useful keywords. Evidence matters more than repetition.
Common questions
What does ATS stand for?
ATS stands for applicant tracking system.
Is there one ATS score used by every employer?
No. Systems and configurations differ, and many employers do not expose a candidate score at all.
Do all companies use an ATS?
No. Usage is common in larger or higher-volume recruitment, but smaller employers may use simpler tools or email.
Can an ATS checker guarantee that my CV will pass?
No. It can identify common readability and relevance issues, but it cannot see private employer rules or guarantee a hiring result.