10 Common Resume Mistakes and How to Fix Them

A resume can be accurate and still make its strongest information difficult to find. The following problems are useful review prompts, not a checklist every candidate must fail. All examples here are fictional. Only use an “After” version if every detail is true for you.

1. An introduction that says nothing specific

Before: Hardworking professional looking for a great opportunity.

After: Administrative assistant with experience scheduling appointments and maintaining client records.

The second version tells the reader what the candidate has done. It is not appropriate if those activities are not in their background. Remove an empty summary rather than filling it with invented expertise.

2. Vague experience bullets

Before: Responsible for various office duties.

After: Scheduled appointments, updated client records and prepared meeting notes.

List the actual activities you performed. A shorter sentence with observable work is more informative than “various responsibilities.” Verify that the revised sentence has not changed supporting a task into owning it.

3. Numbers added only for impact

Before: Helped maintain stock records.

Unsupported revision: Reduced stock errors by 40%.

If there is no evidence for the percentage, do not use it. A factual improvement might be “Updated stock records after deliveries” if that accurately describes the process. Specificity can come from an action or context; it does not always need a statistic.

4. Dates that are hard to connect

A list of date ranges on one side and several roles elsewhere can leave the reader uncertain. Keep each range close to its role and employer. If one employer includes several assignments, show the dated assignments under that employer.

Do not silently rewrite conflicting dates. Confirm them against your records first. A clean layout should clarify uncertainty, not hide it.

5. Skills without evidence

“Leadership, communication, problem solving” is a broad list. Which of these can a reader connect to your experience? Relevant tool names, processes and languages are often more useful when their level is clear.

Before: Excellent communication skills.

After: Responded to customer delivery questions by email and telephone.

This demonstrates a use of communication without turning an ordinary task into an unsupported qualification.

6. Repeating the entire job advert

Tailoring means selecting truthful relevant experience, not copying requirements you cannot support. Use the employer's terminology when it accurately describes your work. Avoid a keyword block that reads differently from the rest of the resume.

If an advert says “stakeholder management” and you only sent routine updates, describe the updates. Do not promote yourself into a different responsibility merely to match a phrase.

7. Hard-to-read formatting

Review the resume at a normal reading size. Crowded lines, tiny type and excessive decoration can undermine otherwise useful content. Keep headings recognizable and dates consistent. Leave enough space for the reader to distinguish entries.

A simple layout is a practical default, not a guarantee of universal ATS compatibility. Greenhouse documents examples of formatting-related parsing failures.

8. Sending an unreviewed export

The editable file and the exported file may not be identical. Open the exact PDF or DOCX you will send and inspect each page. Check for a blank last page, cut-off text, broken links and old comments.

Follow the requested format rather than guessing which one a recruiter prefers. Read PDF vs DOCX for a decision sequence.

9. Giving everything equal space

Older unrelated roles do not necessarily need as much detail as recent relevant work. Keep the chronology honest while using detail selectively. Students can give useful space to projects, volunteering or relevant coursework, clearly labeled as such.

Do not delete a required qualification simply to fit one page. The right length depends on career stage, application instructions and local conventions.

10. Treating a tool score as the final decision

A quality estimate can organize your review, but it does not know the employer's full decision process. Check the recommendations and your facts, not only whether the number increased.

Get four personalized tips and address the most useful changes first. After editing, read your resume as a person would: can you understand the candidate's background, chronology and relevant contribution?

Sources

Harvard's resume guidance supports specific, active and factual language. Greenhouse's parsing documentation provides technical context. The fictional examples above are editorial illustrations, not measured customer results.