A recruiter opens your resume, reads "results-driven professional with a passion for excellence," and slows down. They aren't impressed. They're wondering who, or what, wrote it.
The AI resume tells recruiters notice are habits, not single words. Adjectives come in threes, verbs sound bigger than the work, every bullet runs the same length and the results have nothing in them to check. You can fix all six in an afternoon, and the fix is the same each time: put your own facts back on the page.
Why a recruiter's hunch matters
Resume.io surveyed 3,000 hiring managers and reported that 49 percent of AI-generated resumes get dismissed. A recruiter doesn't need software to reach that call. A hunch from reading is enough.
Employers use AI too, often to sort resumes before anyone reads them. The survey figures sit in our guide on whether employers reject AI-written resumes.
So your page gets read twice. Software compares your words with the posting, and then a person decides whether to believe them. These tells land in that second read.
Using AI to draft or tidy your resume isn't the problem. Leaving its habits on the page is.
Tell 1: adjectives in threes
Ask a chatbot for a professional summary, and you'll often get adjectives in groups of three. People describing their own work rarely talk that way.
Weak:
Detail-oriented, highly motivated, results-driven professional with excellent communication skills and a passion for delivering value.
That's a full line of praise and nothing a reader can picture. A strong line spends the same space on the job:
Claims analyst, [6] years in healthcare billing. Cut first-pass denials from [11]% to [6]% across a team of [9].
Here's the test. Delete one adjective. If the sentence still says what you did, the adjective was filler.
Tell 2: verbs bigger than the work
Watch for "spearheaded," "orchestrated," "leveraged" and "utilized." They sound senior, so generated bullets lean on them. They backfire when the rest of the bullet doesn't match the size of the verb.
Weak:
Spearheaded a cross-functional initiative to orchestrate stakeholder alignment, leveraging data-driven insights to drive transformational outcomes.
Strong:
Ran the weekly call where sales and the warehouse agreed on shipping dates. Late deliveries fell from [40] a month to [9].
"Ran" is a smaller word than "spearheaded," but it's a bigger claim, because something happened after it.
Tell 3: every bullet the same length
Writers rarely notice this one on their own page, yet it's the easiest to measure. When every bullet wraps to exactly two lines, the page starts to look like it came from a template.
Real work doesn't come in equal portions. Some bullets need six words, and one might need thirty.
Count the words in your longest bullet and your shortest. If they're close, say within eight words, vary them on purpose. Cut two bullets to a single short clause, and let one run longer because the story needs the room.
Mixed lengths are also easier to skim, which is a second reason to do it.
Tell 4: results with nothing to check
Weak:
Significantly improved team efficiency and contributed to improved customer satisfaction across multiple departments.
Nothing in that line can be checked, and that's why it reads as machine-made. A chatbot that doesn't know your numbers writes around the gap. You get a sentence shaped like an achievement with the achievement taken out.
Strong:
Rewrote the refund script support agents read on calls. Average handling time dropped from [9] minutes to [6] over [8] weeks.
If you never had a metric, use a count you do have: people, sites, tickets, weeks, versions, clients or languages. Our guide on writing resume bullet points shows where those counts hide.
Tell 5: the same sentence shape every time
Read only the first three words of each bullet. If every one is a past-tense verb plus a vague noun, you have a template, not a work history.
Weak, three in a row:
Managed the implementation of new reporting processes. Developed the creation of training documentation. Coordinated the execution of quarterly audits.
Strong, with the same three facts:
Built the Monday sales report the regional managers now run themselves. Wrote the [12]-page onboarding guide. New hires reached a full caseload in [3] weeks instead of [6]. Owned quarterly audits for [4] sites, [2] of them in their first year.
That's three different openings, three different lengths and two results.
Tell 6: a summary that fits any job seeker
Try this. Cover the job title at the top of your resume and hand the summary to a friend. If they can't name your field after two sentences, it describes a generic worker.
Weak:
Experienced professional with a strong history of success in dynamic settings, eager to bring proven skills to a forward-thinking organization.
Strong:
Support lead who rebuilt a [12]-person team's reply process and kept the same quality score while handling [a third] more tickets.
One role, two facts, one number. That's all a summary line needs, and our resume summary examples show more shapes you can borrow.
Fix the facts first, then the wording
A rewriter can only polish what you give it. Run a thin bullet through one, and you get a smoother thin bullet. So the order matters.
First, write each bullet plainly in your own words, numbers included. Then tighten it with our paraphrasing tool. It's built to change the wording while keeping your meaning, names and numbers, and its Concise mode cuts length by about a third. Read the result next to your original, check every figure, and cut any phrase you wouldn't say to a coworker.
Last, check the page against the posting you're applying to. The ATS resume checker scores the match, lists words from the posting your resume never uses and lists your three weakest bullets.
FAQ
Can recruiters really tell when AI wrote a resume?
Not for certain. They read for patterns like the six above and act on a hunch. The fix is specific detail, not hiding your tools.
Is it safe to use AI on my resume at all?
Yes, for drafting and editing. Supply the facts and figures yourself, then rewrite the output in words you'd actually say.
Which tell hurts the most?
Results with nothing to check. The others are style. A bullet with no fact in it also gives an interviewer nothing to ask you about, so it does no work for you.
Should I delete every big verb?
Keep a big verb only where you can show the scale behind it. Everywhere else, use a plain verb and spend the saved words on the result.
How do I check my own resume in ten minutes?
Read the first three words of each bullet. Compare your longest and shortest bullet. Cover your job title and reread the summary. Then count how many bullets contain a number.