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Resume Guide from a CTO Who Has Reviewed 10,000 Resumes

This course shares practical resume-writing strategies directly from a technical director who has reviewed more than 10,000 resumes. There is no such thing as a “guaranteed-to-pass template” or a “formula that will always get you through.” We’ll show you how resume reviewers read resumes, what they focus on, and what causes them to become fatigued. A resume is not something to memorize. The key to this course is understanding the process of organizing and expressing yourself clearly. Whether you’re an experienced professional or a new graduate, this course will be helpful to any developer who has ever struggled with their resume.

(5.0) 124 reviews

1,178 learners

Level Beginner

Course period Unlimited

Interview
Interview
Resume
Resume
Tech Interview
Tech Interview
get a job
get a job
Interview
Interview
Resume
Resume
Tech Interview
Tech Interview
get a job
get a job

Reviews from Early Learners

5.0

5.0

CCTH

95% enrolled

To be honest, before taking this course, I thought of a resume as just a "document that lists the things I've done." However, after finishing the course, I reflected a lot on how I had been writing my resume completely wrong. While listening to the lectures, my standards for "how to write about projects" changed entirely. (It's difficult to mention the specific content of the lecture directly, but) I was able to get a feel for what context and criteria should be used to organize the content, rather than simply listing tech stacks or numbers. The most impressive part was the section that compared an actual resume before and after the advice. Seeing firsthand how the delivery can change so much depending on how the same experience is explained made the vague standards much clearer, and I was able to apply it to my resume immediately. I completely rewrote my resume right after the course, and the result was a totally different document from before. I felt like I had finally written a "proper resume." Above all, I was very satisfied because it wasn't just simple theory, but a course that sets a direction from the perspective of an actual reviewer. I highly recommend this to those who are writing a resume but feel like something is missing, especially those like me who have practical experience but are struggling with how to present it. Lastly, I would really like to participate in the resume feedback event held for course reviewers. I look forward to this being an opportunity to take the resume I just overhauled to the next level. 🙂 PS. Thank you so much for the limited quantity discount coupon provided on YouTube, which allowed me to take the course even cheaper than the early bird discount. Is there anything in the content above that exposes the course material?

5.0

코딩하는 누누

56% enrolled

While watching this lecture, I realized that everything you said not to do was in my resume. I felt a bit called out, but now I understand why all my applications were rejected while I was preparing to change jobs. This time, I will revise my resume and experience description well to achieve a good result. Thank you for creating such a great lecture.

5.0

신영인

100% enrolled

This lecture clearly answered the questions I had while reviewing others' resumes and writing my own! I'm leaving with great insights. I especially liked how you clearly explained what makes a good resume and what its purpose is, while leaving the actual writing up to me. Thanks to that, I think I'll be able to take my time and think more deeply about it. The lecture was easy to listen to and the content was so good that I finished it in less than a day. Thank you for the great lecture!

What you will gain after the course

  • Understanding the essence and strategies of resume writing, regardless of whether you’re a job seeker, entry-level applicant, or experienced professional

  • Understanding the Right Mindset and Essence of Resume Writing

  • Understanding strategies and management systems for leveraging resumes

  • An experience that lets you rethink your résumé

  • How Resume Reviewers View Resumes

What 10,000 resumes revealed

While there is no universal formula for a successful resume,
resumes that get rejected have recurring patterns.

Each of 10,000 people has a unique appeal.
However, many people are often rejected during the resume screening process because their resumes fail to properly capture their appeal.

I hope you won't give up because of your resume.

Based on patterns I discovered while reviewing more than 10,000 resumes,
I’ll walk you through what not to do, what to do, and what catches a reviewer’s eye, one by one.

Our story of preparing for a job search or career change

You worked hard on it, but
you were rejected again?

I worked hard on my résumé to prepare for a job.
I carefully organized it, included every technology I knew, and described my projects in as much detail as possible.
But all I got in return was a rejection email with no feedback at all...

Without knowing why, you make a few changes to the same resume and submit it again. You get rejected again.
Is it because you lack experience? Because your qualifications are insufficient? Maybe not.

Your resume is failing to showcase your strengthseffectively.


" The problem is not diligence. It’s direction.
The things you included because they seemed like they would look good may actually work against you. "


<Common mistakes that diminish a resume’s appeal>

1️⃣ List every technology you’ve had even the slightest exposure to, without considering what you should emphasize.

2️⃣ Listing only what was done in terms of numbers, without explaining the background of the project.

3️⃣ In emphasizing what I want to highlight, I fail to demonstrate my suitability for the position.

4️⃣ They include as much work history and experience as possible out of fear that leaving anything out might hurt them.


If you want to create an appealing résumé,

"You need to redefine your resume from the reviewer's perspective."

Why this course is different

Not a standardized template,
a course that changes your perspective

Point1.

Understanding the Perspective of the Document Reviewer

A resume essential for the document screening and technical interview stages!
If you want to write one well, you must first understand the person reading it.

Resume reviewers, contrary to what you think, much faster and more strategicallyjudge résumés. This is why carefully written content goes unread and meticulously organized projects fail to stand out.


Understanding the reviewer's perspective is more than just a simple tip.
It is an experience that changes the perspective itselffrom which you write your resume.


Point 2.

Experience It Through Resumes from Working Developers

The course includes a section where you can examine the actual (anonymized) resumes of three working developers.

It’s not simply about “write it this way.” Using actual resumes, we examine together where a document reviewer’s eyes linger, which parts they find appealing, and which parts leave them wanting.


Why is it important to look at other people's resumes?
It is difficult to view your own resume objectively, but you can look at someone else's resume through the eyes of a reviewer. In particular, by comparing resumes before and after receiving feedback, you can directly experience how the same person's experience can be conveyed differently.

See for yourself the difference in impression that a few lines of text and layout can make.


You’ll learn the following content.

Section 1. 15 things you should not do

What ruins a resume is usually not a lack of effort, but working hard in the wrong direction. Things added because they seemed like they would look good, make you appear diligent, or prevent you from losing out are instead causing your application to be rejected.

In this section, we’ll go through the bad habits many people unknowingly repeat, one by one.
Once you know what they are, you’re sure to find things that make you think, "I was doing this too."

Section 2. 14 things you should do

Now that you’ve removed the things you shouldn’t do, it’s time to consider how to fill in your resume. There’s a clear difference between simply listing your experience and creating a resume that gets read.

In this section, we will guide you through what you actually need to do to create a resume that catches a document reviewer’s attention and moves you on to the next stage. A small shift in perspective can completely transform your resume.

Section 3. The Perspective of the Resume Reviewer

If you want to write a good résumé, you first need to understand the perspective of the person reading it. Reviewers read résumés differently and in a much shorter amount of time than you might think.

In this section, we reveal the perspective of a technical director who has reviewed 10,000 resumes. The moment you understand "how my resume appears to a reviewer", your entire perspective on writing resumes changes.

Section 4. Experience It Through Real Resumes

This section is where you directly see how what you learned in theory applies to actual resumes. By looking at resumes from working developers together, you’ll get a feel for which parts fall short and which parts work well.

You truly feel the difference between a good résumé and a disappointing one only when you see it with your own eyes, rather than simply hearing an explanation. This is an opportunity to experience the concepts you learned earlier through real-world examples.

Section 5. Appendix

This section is for those who may still be wondering, "But my situation is a little different... What should I do in a case like this...?" even after taking the course. It covers various concerns, including job hunting in the age of AI, the concerns of newcomers, and the concerns of developers whose only experience is improving legacy systems.


Recommended for those who:

Those who keep failing the resume screening stage and don't know why

Those who have worked hard on their applications but only received rejection notices without a single line of feedback explaining why they were rejected.
Those who keep submitting the same résumé without even being able to identify what the problem is.

Those who, without any criteria for what to include or leave out of their résumé, are simply cramming everything in

Those who have included every skill they know, project they have worked on, and award they have received because they felt they would lose out if they left anything out. Those who want to properly organize the résumé they have built up without any criteria for what to emphasize.

Those who want to understand the perspective of resume reviewers

Those who have wondered what resume reviewers actually look for and what tires them out.
Those who have wanted to think, even just once, from the perspective of reading resumes rather than writing them.


Course Notes

Learning Materials

  • 4. Course materials You can receive the PDF used in the course during the class.


A Message to the Students 💌

After reviewing 10,000 resumes, I became certain of one thing.
Each of 10,000 people has 10,000 different charms.

However, many people were hiding that appeal and continuing to get rejected during the application screening stage with resumes that failed to properly express who they are. Recently, I have come to realize even more deeply that there are far more talented newcomers and experienced professionals than expected who do not even get the opportunity to interview. I created this course because I wanted to help them.

This course does not provide the right answers.
It is a course about working together to consider how to bring out, organize, and properly showcase what you already have within you. There is no formula that guarantees success, but I can give you the power to create a resume that is uniquely yours.

Take a moment with this course to check whether your resume captures what makes you uniquely you.

The person who created this course

Key experience

  • Former Technical Director (Director of Engineering) at Toss Payments

  • Former server developer at Woowa Brothers

  • Former server developer at Lezhin Entertainment

  • Extensive experience at seven other companies, including startups

Presentations and Interviews

Recommended for
these people

Who is this course right for?

  • Job seekers or entry-level developers who find it difficult to write a résumé

  • Experienced professionals who aren’t sure how to present their experience and career history on their resumes

  • Those who keep getting rejected during the resume screening process but don’t know why.

  • Those who want to understand how document reviewers see things

  • Those who want to understand the essence of resume writing and the document review process

  • Those who were merely concerned with filling their résumés with experience.

  • Those who have no idea what to include or leave out of their résumé, so they’re just cramming everything in for now.

Need to know before starting?

  • This course was created based on a typical developer résumé, but it is fundamentally structured from a backend developer’s perspective and background.

Hello
This is geminikims

Inflearn Verified

Career Verified

7,714

Learners

410

Reviews

162

Answers

4.9

Rating

8

Courses

Key Experience

  • Former Director of Engineering at Toss Payments

  • Former Server Developer at Woowa Brothers

  • Former Server Developer at Lezhin Entertainment

  • Possesses diverse experience at 7 other companies, including startups

Presentations & Interviews

Blog

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Curriculum

All

59 lectures ∙ (7hr 34min)

Course Materials:

Lecture resources
Published: 
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Reviews

All

124 reviews

5.0

124 reviews

  • alstn113님의 프로필 이미지
    alstn113

    Reviews 1

    ∙

    Average Rating 5.0

    Edited

    5

    100% enrolled

    Thank you for the great lecture. I am also a regular viewer of your YouTube videos. I am currently preparing for backend positions, and I noticed that most companies require both a resume and a portfolio when applying. Therefore, I have been summarizing my accomplishments concisely in my resume, while using my portfolio to describe problem situations, solutions, and my thought process in more detail. After taking your lecture, a concern has come up. If I should include the problem background, solution process, and my considerations within the resume itself, how should I structure the content in my portfolio? I am wondering if it is better to expand on those points in even greater detail, even if it means some content might overlap.

    • geminikims
      Instructor

      Hello Minsu, thank you for the course review! The atmosphere and patterns vary much more than you might think depending on the company and the reviewer (various situations such as company size, recruitment process, number of document reviewers and interviewers, etc.). Therefore, it is difficult to generalize, but in my opinion, you should provide enough explanation in the resume to lightly aid understanding and include the details in the portfolio. As I mentioned similarly in the lecture, since reviewers ultimately focus more on the resume when there are "many applicants," I believe it is correct to sufficiently appeal your primary charm within the resume itself. If you have any further questions, feel free to ask in the community section! Thank you!

    • geminikims
      Instructor

      To celebrate the launch of the course, I will be conducting resume feedback sessions through a lucky draw! You can participate in the event by writing a "detailed course review"! Please check the news section for more details: https://inf.run/gKTVL

  • daynarr0070454님의 프로필 이미지
    daynarr0070454

    Reviews 6

    ∙

    Average Rating 5.0

    Edited

    5

    63% enrolled

    First of all, I trust your content because it lacks misleading phrases like "The Resume Formula" or "Write like this to get hired." (Looking at the career you've built, it's impossible to argue otherwise.) However, conversely, the idea that there is no "right answer" for a resume left me feeling complicated, thinking, "Then what am I supposed to do?" It's truly difficult. I don't think I'm just a typical developer who has only done standard development; I consider myself a bit of a unique case. Because of that, I'm at a loss as to how to explain my story. As I get older year by year, I've suddenly reached 6–7 years of experience. In a smaller team, 6–7 years of practical experience is a time when one should be taking on a leadership role, but facing the reality of not even passing the initial document screening makes me wonder if my skills are really that lacking. All sorts of thoughts are crossing my mind. (It makes me feel gloomy thinking that everyone else looking for a job probably feels the same way I do.) Still, no one else is responsible for my life, and I believe I must trust the conclusions I reach myself. Although the growing pains of figuring this out are arduous, I think this is a great lecture to start the process of pioneering my own life from scratch in order to gain confidence in my own answers. P.S. I would like to ask questions about the things I'm struggling with, but since a resume contains personal information, I'm honestly hesitant and embarrassed about posting on a public forum like the Inflearn Q&A board where others can see. I'm not sure what to do in this case.

    • geminikims
      Instructor

      JH! Thank you for the review! "The saying that there is no right answer for a resume—then what am I supposed to do?" This is actually very true. It's almost like trying to learn how to swim through words...? Nevertheless, as you wrote, I created this course with the intention of it being "a good lecture to start the process of pioneering my life all over again." Thank you for thinking of it that way! I believe there are definitely fundamental strengths in the experiences you have that aren't related to general development. My first career was also in firmware development, and I have built my career through various forms such as embedded systems and SI. At the time, I thought those careers were something I should discard, but looking back at some point, there were definitely things I gained back then... Anyway, I hope you reflect and contemplate well so that you can write an even better resume!! Regarding the part you mentioned in the P.S., I think there will be quite a few inquiries for me to handle via personal email, so I will think about whether there is another way to resolve this! As you wrote, it would be great if you could ask questions in the community section from the perspective of general strategies!

  • junyeokk님의 프로필 이미지
    junyeokk

    Reviews 7

    ∙

    Average Rating 5.0

    Edited

    5

    100% enrolled

    I used to think that I had to explain my experiences quantitatively by including numbers, but after taking this lecture, I realized that such an approach can end up looking like a mere performance report. It should have been obvious to consider who is reading it first, but I reflected a lot on how I had been writing my resume mechanically until now. When I considered that document reviewers are also busy developers with their own primary tasks, I realized for the first time that they have no choice but to quickly judge an applicant's appeal while skimming resumes in short bursts between work. I truly felt that removing experiences is more difficult and more important than adding many of them. Based on Gemini's actual experiences, I was able to get a sense of what the reviewer's perspective is like, and thanks to that, I had many thoughts while looking over my resume again. It was a lecture that made me think more deeply on my own because you provided a sense of direction rather than just a "correct answer." Thank you.

    • geminikims
      Instructor

      Thank you for your review, junyeokk! It would be very helpful if you could leave a detailed review and feedback later on as well! In addition, we are planning to conduct resume feedback sessions through a lucky draw as part of our course launch event! You can participate in the event by writing a "detailed review"! (You may also edit the review you have already written!) Please check the "What's New" section for more details! : https://inf.run/gKTVL

  • hochoi86214872님의 프로필 이미지
    hochoi86214872

    Reviews 13

    ∙

    Average Rating 5.0

    Edited

    5

    78% enrolled

    I am a junior frontend developer applicant. When I first saw the course, I wondered if the content would be more suited for backend or experienced developers. However, after actually listening to it, I found that there was plenty of content that any developer writing a resume could apply, regardless of their role or years of experience. What I especially liked was that instead of teaching formulas or templates like "write it this way to pass," it explained the flow in which a reviewer reads a resume and at what points they feel fatigue. Thanks to this, when I looked at my resume again, I stopped just trying to make the sentences look pretty and started organizing it based on what information the reader would want to see first. I was originally creating my resume in Figma, but I found myself spending too much energy on design and layout every time I made an edit. After taking the course, I realized that the delivery of content is more important than the visual format, so I moved it to Google Docs and reorganized it. In that process, I rewrote my project descriptions—moving away from simply listing the technologies used and focusing instead on why I built it, what problems I tried to solve, and what decisions I made during the process. As a junior frontend developer, I felt the urge to list many projects for fear of looking inexperienced. However, after the course, I realized it is much more important to clearly show what I learned from each experience and the criteria I used for implementation. Even though there were backend-focused examples, the core was about the perspective of making a resume readable rather than specific tech stacks, so it was plenty helpful for a frontend applicant as well. I would recommend this to anyone who feels like their resume isn't coming together despite constant revisions.

    • geminikims
      Instructor

      Thank you for the course review! I would appreciate it if you could share any further reviews or feedback in the future!

  • keephun님의 프로필 이미지
    keephun

    Reviews 2

    ∙

    Average Rating 5.0

    5

    14% enrolled

    Hello, I am an aspiring back-end developer looking for a job. I have been a subscriber to Gemini's YouTube channel for a year and started this course with high expectations, but this course far exceeded them! While writing my resume until now, I used to keep the problem definitions in my portfolio and focus my resume on how I solved those problems and what results I achieved. However, after watching this lecture, I was able to understand how it feels from the reader's perspective, and I think I've found a great sense of direction again. Also, by thinking about what I should showcase on my resume, this lecture helped me establish a direction for what I need to do more of in the future! For those who are new to the field or in their second year, who have many projects but find their resumes becoming mediocre, or who don't understand the essence of the reasoning behind technical choices—I believe this course is a must, not an option. Good luck to everyone with your job searches and career moves!!

    • geminikims
      Instructor

      Hello Jihoon, thank you for your thoughtful review! I'm so glad to hear that you were satisfied with the course :D I tried to deliver the content as raw and authentic as possible, and I'm very happy if that came across well! It feels very rewarding because it seems like you understood the intention I wanted to convey while creating this course. haha I wish you the best of luck and hope you keep up the great work, Jihoon!

    • geminikims
      Instructor

      To celebrate the launch of the course, I will be conducting resume feedback sessions through a lucky draw! You can participate in the event by writing a "detailed course review"! Please check the news section for more details! : https://inf.run/gKTVL

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