11 Resume Mistakes That Get You Rejected (And the Fixes)

James Walker

James Walker writes about career transitions. London-based career enthusiast.

Visual representation of the voice · not a photographic portrait

Quick answer: The resume mistakes that cost the most interviews are a generic resume for every job, duties instead of results, no numbers, a vague summary, and a layout hiring software cannot read. Each fix takes 5 to 20 minutes, and you can repair all 11 in about two hours.↗ Share on X

The resume mistakes that cost people the most interviews are simple ones: a generic summary, duties instead of results, no numbers, a file that hiring software cannot read, and small typos. The good news is that each one takes 5 to 20 minutes to fix. Below are the 11 most common errors, what they look like, and the exact fix for each, so you can clean up your resume in one evening.

Why do small resume mistakes matter so much?

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A recruiter often looks at a resume for a very short time before deciding to read more or move on. Many companies also use an applicant tracking system (ATS). That is software that stores resumes and lets recruiters search them by keywords. If your resume is hard to scan, or the software cannot read it, a strong candidate can look like a weak one.

So the goal is not a "perfect" resume. The goal is a resume that is easy to scan in seconds and easy for software to read.

The 11 mistakes at a glance

Now the details.

1. Are you sending the same resume to every job?

READ ALSOResume Rewrite Checklist: 9 Fixes Before You Apply Again →Resume Myths That Cost You Interviews (And What Works) →How to Write a LinkedIn Bio After a Career Change →

This is the most common mistake. A general resume fits no job well.

Fix:

1. Open the job posting.

2. Highlight the skills and tools that appear more than once.

3. Pick 5 to 8 of them that you truly have.

4. Use those exact words in your summary, skills section, and bullets.

If the posting says "customer onboarding," do not write only "helping new clients." Use their words. Never add a skill you do not have. It will come out in the interview.

2. Do your bullets list duties instead of results?

"Responsible for social media accounts" tells the reader what your job was. It does not tell them if you were good at it.

Fix: use this pattern for each bullet: action verb + what you did + result.

• Weak: "Responsible for store inventory."
• Strong: "Reorganized stockroom layout, cutting time to find items from about 10 minutes to 3."

Start with a strong verb: built, cut, grew, trained, fixed, launched, reduced, organized.

3. Why does a resume with no numbers look weaker?

Numbers make your claims believable. They also catch the eye when someone scans the page.

Fix: for each job, ask yourself these questions:

• How many? (customers per day, people trained, tickets closed)
• How much? (budget handled, sales made, money saved)
• How fast? (deadlines met, time saved)
• How often? (weekly reports, daily shifts)

You do not need exact data. An honest estimate is fine if you mark it: "about 40 calls per day." Just be ready to explain where the number came from.

4. Is your summary too vague to mean anything?

"Hardworking team player seeking a challenging opportunity" could be anyone. It wastes the most-read spot on the page.

Fix: write 2 or 3 lines that answer three questions:

1. What are you? ("Retail supervisor with 6 years of experience")

2. What are you best at? ("training new staff and reducing stock losses")

3. What proof do you have? ("led a team of 12 in a high-volume store")

If you are changing careers, add the target role: "moving into project coordination."

5. Is a fancy layout hurting you?

Two columns, text boxes, icons, charts, and photos can look nice. But some ATS software reads them in the wrong order or skips them.

Fix:

• Use one column.
• Use standard headings: Summary, Experience, Skills, Education.
• Put dates in the same spot for every job.
• Use a common font like Arial, Calibri, or Georgia, size 10 to 12.
• Skip skill "rating bars." A bar showing "Excel: 80%" means nothing to a reader.

A quick test: copy all the text from your resume and paste it into a plain text file. If the order looks scrambled, the software may see it that way too.

6. Is your resume the wrong length?

A long resume hides your best work. A very short one looks thin.

Fix: a common rule of thumb:

• Under about 10 years of experience: one page.
• More experience, or a senior role: two pages is fine.

To cut, remove jobs that are very old and unrelated, school details once you have work experience, and bullets that repeat the same skill. Keep the 3 to 5 strongest bullets for recent jobs and 1 to 2 for older ones.

7. Could typos and messy formatting be costing you?

A typo can make a reader think you are careless, especially if the job asks for "attention to detail."

Fix:

1. Read the resume out loud, slowly.

2. Check every date. Use one format, like "Mar 2022 - Jun 2024."

3. Check verb tense: past tense for past jobs, present tense for your current job.

4. Ask one other person to read it.

5. Check that company names and job titles are spelled right.

8. Does your contact information look unprofessional?

An old email like "partyking88@..." can create a bad first impression. A full street address is not needed and takes space.

Fix: put these at the top:

• Full name
• City and state (or "Open to remote")
• Phone number
• Simple email, like firstname.lastname@
• LinkedIn or portfolio link, if it is up to date

Make sure your voicemail greeting is clear, too. Recruiters do call.

9. Are you listing soft skills with no proof?

"Great communicator, problem solver, leader." Everyone writes this. Soft skills are skills like communication, teamwork, and patience. They matter a lot, but a list of them proves nothing.

Fix: show the skill inside a bullet instead:

• Instead of "strong communicator": "Wrote weekly updates for 3 departments, which cut repeated questions to the manager."
• Instead of "leader": "Trained 8 new hires in their first month on the register and returns process."

Keep a short skills section for hard skills: software, tools, languages, licenses.

10. Are you hiding a career change?

If you move from teaching to sales, or from retail to IT support, a reader may not see the link. They may just think you are in the wrong pile.

Fix:

• Add one bridge line in your summary: "Former teacher moving into instructional design, with 7 years of building lesson plans for 30+ students."
• Put related training or certificates near the top.
• Rewrite old bullets in the language of the new field. A teacher "presented to groups of 30" and "tracked progress for each student." Those are useful in many jobs.
• Consider a short "Projects" section for work you did while learning.

11. Are you sending the wrong file?

A file named "resume_final_v3_NEW.docx" looks sloppy. Some systems also struggle with unusual file types.

Fix:

• Send a PDF unless the job asks for Word (DOCX).
• Name it clearly: "Maria-Lopez-Resume.pdf".
• Open the file on your phone before sending to check that it looks right.

How do you fix all 11 in one evening?

Here is a simple plan that takes about two hours:

1. (15 min) Pick one real job posting you want. Highlight its keywords.

2. (15 min) Rewrite your summary using the three-question method.

3. (40 min) Rewrite your bullets: action + result + a number where you can.

4. (15 min) Move everything into a one-column layout with standard headings.

5. (15 min) Cut old or repeated items until you reach the right length.

6. (10 min) Fix contact info and the file name.

7. (10 min) Read it out loud and check dates and spelling.

Save this version as your "master" resume. For each new job, make a copy and change only the summary, skills, and top bullets to match that posting. That takes about 15 minutes per application.

What should you do right now?

Open your resume and look at your most recent job. Rewrite its first three bullets using the pattern action verb + what you did + result, and add one number to each. That single change fixes mistakes 2, 3, and 9 at once, and it is the part a recruiter is most likely to read first.

FAQ

How long should my resume be?

A common rule of thumb is one page if you have under about 10 years of experience, and up to two pages for longer careers or senior roles. Cut old, unrelated jobs and repeated bullets first.

Should I send my resume as a PDF or Word file?

Send a PDF unless the job posting asks for a Word (DOCX) file. Name it clearly, like First-Last-Resume.pdf, and open it on your phone before sending to check the layout.

Is it okay to estimate numbers on my resume?

Yes, an honest estimate is fine, such as 'about 40 calls per day.' Never inflate it, and be ready to explain in the interview how you got the number.