12 Resume Mistakes That Are Costing You the Job (And How to Fix Them)

A recruiter spends an average of 7.4 seconds scanning your resume. In that time, even small mistakes can move you to the “no” pile. Here are the 12 most damaging errors we see — and how to fix each one.

Formatting Mistakes

1. Using a generic objective statement. “Seeking a challenging role where I can leverage my skills” tells recruiters nothing. Replace it with a specific professional summary that highlights your top 2-3 achievements relevant to the role.

2. Making it too long. Unless you have 15+ years of experience, your resume should be one page. Two pages max for senior roles. Recruiters don't read page three.

3. Using tiny fonts to fit more content. If you need 9pt font to fit everything, you have too much content. Cut the fluff. Minimum 10.5pt for body text.

4. Inconsistent formatting. Mixing bullet styles, inconsistent date formats (May 2023 vs 05/2023), and varying indentation screams “careless.” Pick a format and stick with it.

Content Mistakes

5. Listing duties instead of achievements. “Responsible for managing a team of 5” → “Led a team of 5 engineers that shipped 3 products, generating €2.1M in revenue.” Always answer: “So what? What was the impact?”

6. Including irrelevant experience. Your summer job at a pizza shop 10 years ago doesn't belong on your software engineering resume. Every line should serve the role you're applying for.

7. Missing keywords from the job description. If the posting mentions “Agile methodology” 3 times and your resume never uses the word “Agile,” that's a missed opportunity — for both ATS and human readers.

8. No numbers or metrics. Quantified achievements are 40% more likely to catch a recruiter's eye. “Improved efficiency” → “Reduced processing time by 35%, saving 12 hours/week.”

Technical Mistakes

9. Sending the wrong file format. Unless specified, send a PDF. Word documents can look different on different machines. Never send .pages or Google Docs links.

10. Including a photo (in most markets). In the US, UK, and many other markets, photos introduce bias and can trigger automatic rejection. Skip it unless you're applying in a market where it's expected (Germany, France).

11. Using a non-professional email. coolguy2003@hotmail.com isn't going to land you a senior role. Use firstname.lastname@gmail.com or your own domain.

12. Forgetting to proofread. 58% of recruiters will reject a resume for a single typo. Read it backwards. Read it out loud. Have someone else read it. Use spell-check. Then check again.

The Fix: A Systematic Approach

Rather than checking for each mistake manually, use a tool that catches them all. Tildea's ATS engine scans for formatting issues, missing keywords, quantification gaps, and structural problems — giving you a score and specific fixes before you hit “Apply.”