Oct 12, 2026 ·
The Unseen Pile
There's a scene that repeats in every selection process I've led. Late afternoon, the application deadline closed, and on the desk (or screen) is a pile of resumes. One hundred twenty, sometimes three hundred. I have an opening, a manager waiting for a shortlist, and little time.
What follows is always hard for me to say out loud, because it's unfair: most are discarded in seconds. Not because they are bad people or bad professionals. But because they made an avoidable mistake that gave me, right there, an easy reason to move on to the next one.
After more than 30 years of reading resumes, I can tell you that the mistakes that eliminate applications are surprisingly few and surprisingly repetitive. They are not talent mistakes. They are mistakes of presentation, attention, and strategy. And, the best news of all, they can be corrected in an afternoon.
In this article, I will show you the seven I see most often, in order of the damage they cause. For each, I explain:
- how it manifests in practice;
- what the recruiter thinks when they see it (yes, I'll be honest);
- how to correct it, with before and after examples.
At the end, I'll give you a fifteen-minute test to check your own resume, before someone else does.
A warning before we begin: as you read each mistake, you'll likely recognize some in your own resume. That's normal and healthy. We've all made at least one. What matters is what we do from here.
First, Understand How Decisions Are Made from a Pile of Resumes
To understand the mistakes, it helps to understand the context in which they are viewed. And here's an uncomfortable truth: recruiters rarely have time to read. What they do is scan.
The First Pass
In the first read, the eye scans the page from top to bottom, looking for quick answers:
- Who is this? (name, role, city);
- Do they do what I need? (recent position, skills, sector);
- Do they have proof? (results, companies, education);
- Is there anything that worries me? (errors, gaps, disorganization, exaggerations).
If the first three answers are good and the fourth is "nothing," the resume goes into the "maybe" pile. If the fourth has an alarm signal, it stops there.
This is why mistakes weigh so heavily. A strong resume with a serious error loses to an average resume with none. It seems unfair, and often it is, but that's how it works when there are hundreds of applications to read.
What about Automated Systems?
Many companies use Applicant Tracking Systems (ATS) that organize applications and allow searching by keywords. They don't reject everyone on their own, as is often said, but if the system can't read your resume, or if the right keywords aren't there, the recruiter may never see it. I'll show you, in the following mistakes, where this happens.
A Rule of Thumb
Think of it this way: your resume doesn't need to convince the recruiter that you're the best. First, it needs to give them no reason to discard it. Then, it needs to give them three good reasons to call you. The following seven mistakes are the most common reasons for rejection.
Mistake 1: The "One-Size-Fits-All" Resume
This is the number one mistake, and by far the most frequent. A single document, sent to twenty different job openings, without changing a comma.
How it manifests
- The summary talks about "new challenges" without specifying which ones;
- The target role is unclear: it seems suitable for administrative, commercial, and customer service;
- Skills are a general list, unrelated to what the job requires;
- The words from the job ad do not appear in the resume.
What the recruiter thinks
"This person didn't read the job ad. I don't know what they want, or if they want this. I don't have time to guess." And moves on to the next. Recruiters want to feel that the resume was written for that specific role, even if the core content is the same.
How to correct it
You don't need to write a new resume every time. You need a base resume and a fifteen-minute adaptation:
- Read the job ad and underline the job title, the five or six main skills, and the mandatory requirements;
- Rewrite the summary with the same title (if it truly matches your profile) and the two or three most important terms;
- Reorder the bullet points for each experience, placing the most relevant ones first;
- Align your skills with those in the job ad that you actually possess;
- Cut anything that doesn't help this specific application.
Before and after
| Before | After | | --- | --- | | "Dynamic professional seeking new challenges." | "Administrative Assistant with 6 years of experience in calendar management, filing, and customer service, seeking a director support role." | | Skills: Word, Excel, Internet, sales, IT, communication | Skills: Excel (advanced), calendar management, customer service, filing, and document organization |
Two well-adapted applications are worth more than twenty generic ones. From personal experience, and however hard it is for someone desperate, less is more.
Mistake 2: A List of Tasks, Without a Single Result
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If mistake 1 makes the resume seem generic, mistake 2 makes the professional seem generic. It's the worst-kept secret of weak resumes: they state what the person had to do, and never what they achieved.
How it manifests
- "Responsible for customer service";
- "Handled administrative matters";
- "Collaborated with the sales team";
- "Supported the finance department".
All these phrases are true. And all are the same as those of fifty other candidates. The recruiter reads them without learning anything new.
What the recruiter thinks
"Okay, they worked there. But did they make a difference? Was it better because they were there?" Without proof of impact, the resume becomes background noise.
How to correct: the formula
Action verb + what you did + result (or dimension)
| Task (weak) | Result (strong) | | --- | --- | | "Responsible for customer service." | "Served an average of 40 customers per day, resolving inquiries and complaints on first contact, with a 95% satisfaction rate." | | "Supported the finance department." | "Daily recorded invoices and payments and prepared monthly closing, reducing closing time from five to three days." | | "Collaborated with sales." | "Supported a team of 8 salespeople with proposals and reports, contributing to exceeding quarterly targets on two occasions." | | "Handled purchases." | "Negotiated with 15 suppliers and reduced purchasing costs by approximately 10%." |
"But I don't have numbers"
The most common excuse, and almost never true. If you don't have exact percentages, look for the dimension:
- How many people, clients, projects, or suppliers?
- How often (per day, per week, per month)?
- What budget or volume did you manage?
- What changed after your intervention?
And use honest estimates: "about," "more than," "on average." An approximate and true number is infinitely better than none.
An exercise I recommend
Take each point on your resume and ask the most annoying question in the world: "So what?" "I served clients." So what? "I resolved their inquiries." So what? "Many returned to buy." There's the result. Write that down.
Mistake 3: A Format Neither Machine Nor Person Can Read
We've all opened a resume that looked like a poster: two columns, icons everywhere, colored bars to "show" Excel proficiency, a photo in the middle of the text. Very creative. And very difficult to read.
How it manifests
- Two columns or text boxes, which confuse the order of automatic reading;
- "Level" tables and graphs (bars, stars, percentages) for skills and languages;
- Icons instead of words for phone, email, and address;
- Contact information in the document header, where some systems don't read it;
- Resume as an image or scan;
- Decorative fonts, colored backgrounds, or textures;
- Creative titles: "My Journey," "What I Know," "Who I Am."
What happens, in practice
If the ATS can't read the file correctly, the person who opens it sees a jumble of letters: the job title mixed with the date, the company name glued to the phone number. I've seen beautiful resumes reach the recruiter like this, illegible.
And if a human is reading, skill bars say very little: what does "Excel 80%" mean? That you know 80% of Excel? Of what? For what purpose?