5 Resume Mistakes That Get You Rejected and How to Fix Them

Last updated: August 7, 2026

A recruiter might spend only a few seconds on your resume. In that window, they decide if your application moves forward. So what makes them say no?

Usually it’s not the candidate’s qualifications. It’s the same five mistakes, repeated over and over. And each one has a practical fix.

Mistake #1: Typos, Grammar Errors & Formatting Inconsistencies

Why it kills you: Here’s the stat: 77% of hiring managers would reject a resume with typos or grammatical errors, per a CareerBuilder survey (source). That’s more than three out of four. A missed comma or a misspelled word can sink an application on its own.

How to fix it:

• Read your resume aloud. You’ll hear awkward phrasing and catch missing words your eyes glide past.
• Run it through something like Grammarly or Hemingway Editor. Yes, even the bullet points.
• Ask someone else to look. A friend or family member will notice what you don’t.
• Keep things consistent: date formats (Jun 2024 or 06/2024? Pick one), punctuation in bullets, capitalization.

Pro tip: Read your resume backwards, one word at a time. That forces your brain to see spelling, not meaning.

Mistake #2: Not ATS-Optimized

Why it kills you: Roughly 25% of resumes get past ATS filters (source). So three out of four applications never reach human eyes. The culprits are usually complex formatting, tables, text boxes, images, columns, that parsing software simply can’t handle.

How to fix it:

• Use clean, standard formatting. No tables, columns, or text boxes.
• Choose common fonts like Arial, Calibri, or Georgia. Skip script and decorative styles.
• Leave out images, graphics, icons, or charts. ATS can’t read them at all.
• Save and submit as a standard .docx or .pdf (test which your target company accepts).

The golden rule: If your resume looks like a magazine layout, it may be difficult for an ATS to parse. Keep it simple.

Mistake #3: Generic, One-Size-Fits-All Content

Why it kills you: Applying to 50 jobs with the same resume usually shows. Generic resumes read like templates and rarely match the role (source).

How to fix it:

• Start with your base resume. Then edit for each job you apply to.
• Match your skills section to the keywords in the job description.
• Rewrite your professional summary to mirror the language of the posting.
• Adjust your bullet points to highlight relevant experience for that specific role.

Pro tip: Apply to 5 jobs per day with tailored resumes instead of 50 generic ones. This gives you more time to focus each application.

Mistake #4: Listing Duties Instead of Achievements

Why it kills you: “Responsible for social media” tells the recruiter what you were supposed to do. “Grew Instagram from 2K to 15K followers in 6 months” tells them what you actually did. Hiring managers want to see results, not only the duties in a job description (source).

How to fix it:

Weak (Duty)	Strong (Achievement)
‘Responsible for customer service'	'Resolved 50+ tickets daily with 95% satisfaction rate'
'Managed a team'	'Led a team of 5, delivering projects 30% faster'
'Handled social media'	'Grew Instagram from 2K to 15K in 6 months’

The formula: [Action Verb] + [What You Did] + [The Measurable Result]

Don’t know the exact number? Estimate. “Approximately 20% increase” beats “significantly improved” every time.

Mistake #5: Missing or Weak Keywords

Why it kills you: When an ATS scans your resume, it’s matching keywords against the job description. Use different language than the posting and your score takes a hit. Lean on tired buzzwords like “spearheaded,” “leveraged,” or “dynamic,” and you’re either getting filtered out or irritating the recruiter (source).

How to fix it:

• Drop the job description into a word cloud tool, then pull the terms that show up most.
• Match their phrasing exactly. They write “project management”, you write that too, not “oversaw deliverables.”
• Swap buzzwords for concrete, results-driven language.

Pro tip: Build a “core competencies” section packed with 10-15 keywords that matter in your field. Pull both hard skills and soft skills straight from job descriptions.

How to Fix All Five Mistakes (Automatically)

Tailoring each resume, checking for typos, optimizing for ATS, and quantifying bullet points eats up time. When you’re firing off applications to dozens of roles, those steps get skipped fast.

That’s exactly why Resumae.xyz exists.

Resumae.xyz helps you:

• Generate ATS-optimized resumes with clean formatting
• Automatically surface the right keywords from job descriptions
• Rewrite weak bullet points into achievement-focused language
• Build multiple tailored versions for different roles

Less guessing, fewer generic templates, and clearer applications.

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Key takeaways:

• Typos? 77% of hiring managers reject resumes over them. Proofread like your next job depends on it.
• Only 25% of resumes clear the ATS filter. Clean formatting plus keywords pulled straight from the job description.
• Generic resumes get ignored. Tailor every single application.
• Achievements beat duties. Quantify impact in each bullet point.
• Keywords matter more than buzzwords. Use the exact language of the posting.

Your resume starts the conversation. Skip these five mistakes and it stands a real shot at getting read.

Build a resume that’s easy to read. Head to Try Resumae.xyz, it’s free.