Common Resume Mistakes (and Red Flags)

Most rejections come from a handful of fixable mistakes. Here they are, with the fix for each.

1. Listing duties, not achievements

Fix: Turn 'Responsible for managing social media' into 'Grew Instagram following 3× (12k→38k) in 8 months.'

2. No numbers

Fix: Quantify impact — %, $, time saved, scale. Numbers are what recruiters remember.

3. One generic resume for every job

Fix: Tailor the summary, skills and top bullets to each job description's keywords.

4. Wrong length

Fix: 1 page under ~10 years' experience, 2 pages above. Don't pad.

5. ATS-breaking format

Fix: Single column, standard headings, no header/footer contact, no graphics-locked text.

6. Typos & inconsistent formatting

Fix: Proofread out loud; keep dates, tense and bullet style consistent. Typos read as carelessness.

7. Unprofessional or missing contact info

Fix: Use a simple name-based email; include city, phone, LinkedIn. Skip the photo (in most countries).

Catch these in seconds: paste your resume into our free ATS resume checker — it flags duty-only bullets, missing numbers, format issues and missing keywords.

FAQ

What are the top 5 resume mistakes?

Listing duties instead of achievements; no quantified results; using one generic resume for every role; wrong length; and ATS-breaking formatting. Fix these first.

What are red flags on a resume?

Unexplained employment gaps, very short stints across many jobs (job-hopping) with no context, vague responsibilities with no results, inconsistent dates, and typos. You can defuse most by adding brief context and focusing on impact.

Why do resumes get rejected automatically?

Usually a formatting problem the ATS can't parse, or missing keywords from the job description — so the resume never surfaces in a recruiter's search. Fixing format and matching keywords solves most auto-rejections.