Glossary
A plain-language definition from the Curriculo hiring glossary.
An applicant tracking system (ATS) is software that collects job applications, stores candidate records, and moves each person through your hiring stages.
Why it matters
Without an ATS, hiring lives in inboxes, spreadsheets, and memory. Resumes get lost. Two people email the same candidate. Nobody knows who is waiting on a reply. For a small team, that mess costs real hires, because good candidates accept other offers while you search your inbox.
An ATS gives every applicant a record, a stage, and an owner. You can see who applied, who's been screened, and who needs an answer today.
What an ATS usually does
- Posts jobs to your careers page and job boards.
- Collects applications and parses resumes into structured fields.
- Tracks each candidate through stages such as Applied, Screen, Interview, Offer, and Hired.
- Stores notes, scorecards, and emails so the whole team sees the same history.
- Reports on numbers like time to hire and source of hire.
A quick example
A 12-person startup opens a backend role and gets 180 applications in two weeks. In a shared inbox, the founder reads about 40 and loses track of the rest. In an ATS, all 180 sit in one list, sorted and tagged. The founder screens the top group first and sends a status email to everyone else in one step.
Many tools now add AI ranking on top. For example, Curriculo ATS scores every candidate from 0 to 100 against your job, with a written AI summary of the fit.
Common mistakes
- Buying for features you won't use for two years.
- Paying per seat, then keeping hiring managers out of the tool to save money.
- Trusting keyword filters to reject people without a human check.
- Setting up stages nobody follows, so the data stops meaning anything.
For a longer walkthrough, read what an applicant tracking system is and how it works. If you're unsure you need one yet, see do you need an ATS, or compare options in the ATS buyer's guide.