Definition
Applicant Tracking System (ATS)
Also: ATS
An applicant tracking system (ATS) is software employers use to collect, organize, parse, and filter job applications. It reads each resume into structured data and helps recruiters search and rank candidates before manual review.
Almost every online application passes through an ATS first. When you submit a resume, the system parses it into fields — contact details, work history, skills, education — and stores it so recruiters can search, filter, and rank applicants by criteria such as keywords, years of experience, or location.
Public research puts ATS adoption at roughly 99% of large employers and around 75% overall. The practical takeaway: a resume has to parse cleanly and contain the job’s key terms to be found, because recruiters often search within the ATS rather than reading every application.
Common questions
- Does an ATS reject resumes automatically?
- Most ATS software ranks and filters rather than auto-rejecting. The bigger real-world risk is a resume that fails to parse — from tables, columns, or images — so its content never becomes searchable.
Put it to work
Related terms
ATS-friendly resume
An ATS-friendly resume is one formatted so applicant tracking software can parse it accurately: a single-column layout, standard section headings, no tables or text inside images, and standard fonts.
Resume parsing
Resume parsing is the process an ATS uses to read a resume file and extract its information into structured fields — name, contact details, work history, skills, and education — so the data can be searched and filtered.
ATS score
An ATS score is a 0–100 rating of how well a resume matches a specific job description — typically based on keyword overlap, required skills, and formatting readability. A higher score means a closer match to what the job asks for.
Resume keywords
Resume keywords are the specific skills, tools, qualifications, and job-title terms a resume shares with a job description. Matching them helps a resume rank higher in ATS searches and signals relevance to recruiters.
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