ATS Resumes: What the System Actually Does (and What's Myth)
The robot doesn't reject resumes, people do. Here's what an ATS actually does, why the plain-text test matters more than any match score, and what to fix.
Lumne Team
Marina spent an entire Sunday on her resume. She ran it through an optimization tool, adjusted what it told her to adjust, ran it again. She reached a 93% match with the job and sent it on Monday, calmer than she had ever been.
Nobody replied.
It helps to understand what that 93% was, because the explanation changes what you do with your Sunday. That number never left her computer. It was calculated by the tool itself, comparing the text of her resume with the text of the posting, using a yardstick whoever programmed the tool chose on their own. The company never saw that number. The company has no way to see it.
That's the starting point for any honest conversation about ATS: much of what gets sold as "optimization" solves a problem that doesn't exist, and leaves untouched the things that actually hurt you.
People do the rejecting
ATS stands for Applicant Tracking System: the software where applications come in and get moved from stage to stage. Greenhouse, Lever, Workday, iCIMS and SmartRecruiters are some of the names you'll run into.
The question everyone asks is whether the robot rejects resumes. Gergely Orosz answers in four words: people do the rejecting. Amy Miller, who recruited at Amazon, Google and Microsoft, says the idea of the ATS as a genius tool powered by artificial intelligence is a running joke among people who use the system every day.
That was written in 2020, and in software five years is a long time. In 2026, AI-assisted screening exists and is sold under brand names. But look at what the vendors themselves describe: the largest vendor in the Brazilian market states that its ranking works as an organizer — no automatic elimination, every profile visible to the recruiter. Workday bought a candidate-scoring company, and the main feature automatically advances the highest-scoring candidates to the next stage.
In other words, the automation companies have actually switched on is a priority queue. It sorts. It doesn't throw anything away.
That changes your question. It stops being "how do I get past the machine" and becomes "how do I get to the top of the list it builds".