What Is an Applicant Tracking System and How Does It Work?
A simple, no-jargon guide to what ATS software actually does with your job application — and how to work with it, not against it.
Quick Answer
An applicant tracking system (ATS) is software companies use to collect, sort, and manage job applications. It rarely rejects you by itself. Instead, it organises resumes into a searchable database, scores them against the job description, and hands the shortlist to a real recruiter who makes the final call.
You hit “submit,” and then… nothing. No confirmation, no rejection, not even an automated “thanks.” It’s tempting to blame a faceless robot for reading your resume for three seconds and binning it. That story isn’t quite true. Nearly every online job application passes through an applicant tracking system, and once you understand what it’s actually doing, the silence makes a lot more sense.
What Is an Applicant Tracking System?
An applicant tracking system (or ATS, for short) is recruiting software designed to track every single resume and application a company receives. It serves as an organized database that keeps track of where each candidate is in the hiring process, takes notes from your hiring team about each interaction, and even helps you remember who you need to follow up with. Companies of all sizes utilize some variety of an ATS, from small agencies only hiring three people a year to massive corporations hiring three hundred.
How Does an Applicant Tracking System Work?
An ATS works in four basic stages, and it’s worth walking through them one at a time.
1. You submit your application
The moment you click “apply,” your resume, cover letter, and any answers you typed go straight into the ATS database. This happens whether you applied through the company’s own careers page or through a job board like Indeed or LinkedIn.
2. The system parses your resume
Parsing simply means that the software will read your document and extract information from it in a file format understandable by the software. The information usually extracted includes names, titles, dates, skills, and experience. This is the main reason a resume containing graphics, tables, text boxes, and other complex formats might not parse correctly.
3. It ranks candidates against the job
Most modern systems will compare your parsed resume to the job description and provide you with a rough percentage of how well you matched the requirements. A poor match is rarely a deal-breaker, but it can put you lower on the priority list of recruiters.
4. A recruiter reviews the shortlist
This is the step that most people miss. The ATS cuts down on an enormous amount of resumes (300 resumes) to a more manageable number, but a human still has to open up those resumes and decide who to invite for interviews. The software filters, but doesn’t make the hire.
What Features Does an ATS Include?
Most platforms offer a similar core toolkit:
- Resume parsing and keyword search
- Job posting to multiple boards at once
- Candidate scoring and ranking
- Interview scheduling that syncs with calendars
- Automated emails and status updates
- Team notes and collaborative feedback
- Reporting on time-to-hire and pipeline health
Does an ATS Automatically Reject Resumes?
This is the most common myth about ATS software, and it has a simple answer, unfortunately, not for the case. The study conducted by the American recruiting software in 2026 among the US recruiters revealed that 92% of recruiters either do not use ATS software or do not believe that this software automatically rejects candidates for design errors, improper design choice, or lack of required keywords. The main reason is that one position can attract hundreds of candidates, and a recruiter can receive only a fraction of them, so they have little time to skim through the documents. This is when ATS software helps, but it does not do that by rejecting applicants.
Why Do Companies Use an ATS?
What business case? It’s all about time and money: According to Frankland Automation, organizations that use an ATS cut their average time-to-hire by up to 40% compared with traditional approaches. Meanwhile, a SHRM survey found the average US cost-per-hire was close to $4,700, and a well-run ATS helps bring that number down by reducing the admin work behind every hire. The global ATS market itself is projected to grow from around $18.5 billion in 2026 and nearly $35 billion by 2034, according to Fortune Business Insights, which makes these platforms an essential source of support in attracting and screening candidates.
How to Get Your Resume Past an ATS
A few practical habits make a real difference:
- Use a simple, single-column layout. Skip text boxes, tables, and headers or footers for key details.
- Save your resume as a Word document or a text-based PDF, not a scanned image.
- Mirror the job description’s language. If the posting says “project management,” don’t only write “managed projects.”
- Use standard section titles like “Work Experience” and “Education” instead of creative alternatives.
- Spell out acronyms at least once, for example “Search Engine Optimisation (SEO).”
- Apply early. Recruiters often review applications in the order they arrive, especially in the first 48 hours.
Frequently Asked Questions
What does ATS stand for?
ATS stands for applicant tracking system. It’s the software employers use to collect, organise, and track job applications from the moment someone applies through to the final hiring decision.
Can an ATS reject a resume without a human seeing it?
It’s uncommon. Most systems rank and sort applications rather than auto-reject them. A recruiter almost always reviews the shortlist before anyone is turned down.
Do I need to use exact keywords from the job posting?
Not word for word, but close. Matching the job description’s terminology, including how skills and job titles are phrased, helps your resume score higher and be easier for a recruiter to skim.
Is it better to submit a Word document or a PDF?
A text-based PDF or a simple Word document both work well with modern systems. Avoid PDFs made from scanned images, since the software can’t read text inside a picture.
Which companies use applicant tracking systems?
Almost all of them. Small agencies, mid-size businesses, and large corporations across the US and UK use an ATS, because manually reviewing hundreds of applications by hand simply isn’t practical.
Does a creative resume design hurt my chances?
It can. Heavy graphics, columns, and unusual fonts sometimes get parsed incorrectly, which can scramble your work history. A clean, well-organised layout is safer and just as effective for a recruiter reading it by eye.
The Bottom Line
An applicant tracking system is not the villain as it was presented in the video. It is simply a sorting tool for recruiters, and a properly formatted resume that targets the position will rise to the top of the pile. Concentrate on creating a winning resume, and not on trying to trick a machine into accepting your application, as it is unnecessary.
