Here’s something nobody tells you when you start applying for jobs: a real person probably isn’t the first one looking at your résumé. It’s software.
Most companies — especially big ones — use something called an Applicant Tracking System, or ATS. It’s basically a program that scans your application before any human touches it. According to Tufts University’s Career Center, 98.4% of Fortune 500 companies use one. And it’s not just the giant corporations — lots of mid-size companies do too.
Here’s how it works. When a company posts a job, the recruiters feed the ATS a list of things they’re looking for: specific skills, job titles, experience level. Then when you apply, the ATS scans your résumé and cover letter to see how many of those things it finds. The more matches, the higher you rank. The fewer matches, the more likely your application just… disappears.
Now, here’s where it gets a little more nuanced. Colorado State University’s career center points out that ATS systems don’t always automatically reject you outright — some of them use AI to rank and sort applications by relevance instead of just cutting people off. But either way, if your résumé doesn’t have the right keywords, you end up buried at the bottom of a pile nobody gets to. Same result, basically.
So what actually helps?
Read the job posting carefully. Like, really carefully. The words the company uses to describe what they want — those are your keywords. If they say “project management,” your résumé should say “project management,” not “managing projects.” Many ATS programs look for exact or near-exact matches, and even AI-enhanced ones rank closer keyword matches higher. Either way, matching the exact language in the posting gives you the best shot.
Mirror the language in the posting. If the listing says “customer service,” use that phrase. If it says “data analysis,” use that. Don’t get creative with synonyms here — save the creativity for the interview.
Put your keywords in the right places. Skills sections, job descriptions, even your summary at the top. The ATS is scanning the whole document, so spread them out naturally — don’t just stuff a bunch of words at the bottom in tiny white text (yes, people have tried this, and it’s a bad idea).
Keep your formatting simple. Fancy graphics, tables, text boxes — some ATS programs can’t read those properly. A clean, straightforward layout is more likely to be parsed correctly.
And tailor every application. One generic résumé sent to fifty jobs is way less effective than five tailored résumés with the right keywords for each specific role. It takes more time, but it’s actually worth it.
The whole system can feel unfair, and honestly, it kind of is — especially when you’re qualified but your résumé just didn’t happen to use the exact right words. But knowing how it works puts you ahead of most applicants who have no idea this is even happening.