A Senior Interviewer's Guide to Solving Developer Employment and Career Moves in One Go [Theory Edition]

This is a career guide course that covers the entire process of landing a developer job or switching careers, including resumes, portfolios, technical interviews, and behavioral interviews. The theory section outlines the process of finding the right company for you, analyzing job postings, and preparing for interviews and coding tests.

(5.0) 43 reviews

618 learners

Level Basic

Course period Unlimited

Portfolio
Portfolio
Coding Test
Coding Test
Resume
Resume
Portfolio
Portfolio
Coding Test
Coding Test
Resume
Resume

Reviews from Early Learners

5.0

5.0

이진우

100% enrolled

I was frustrated because I had been rejected in the document stage for the past 4 years and I couldn’t renew my membership even though I had been taking classes, mentoring, and participating in job challenges. Then I saw this class and was able to find out what I still lacked. (I didn’t express the process and results of my efforts well.) So I decided to get up and challenge myself again. I will refer to this and try to change jobs. Thank you for the great class.

5.0

yoon

100% enrolled

Thank you for sharing your long experience and know-how. There are many methods that I never thought of that can help with employment/job change. I think it is a good lecture that will be of great help if you try each one.

5.0

박 성현

100% enrolled

It was a great lecture that allowed me to reflect on the entire hiring process and the shortcomings of my resume or portfolio, and taught me how to organize them. It helped me look back on my entire job search and figure out how to navigate it, and how to re-establish my strategy and direction. Thank you. Also, the lecture included directions for transitioning from junior to senior level, which will be helpful in the future.

What you will gain after the course

  • Writing a Clean Developer Resume

  • How to create a standout portfolio

  • How to find the right company for you

  • Tackling daunting coding tests: easy approaches and step-by-step mastery

  • Preparing for a technical interview

  • Server Scaling Strategies and Large-Scale Data Processing Strategies

  • Preparing for Personality and Final Interviews

  • Retrospection, Growth, and Designing a Career Roadmap by Level

메리-상세페이지 띠배너 (960x200) (1)

Solving the overwhelming challenge of job hunting and career changes all at once.

To help you overcome the hurdles of job hunting that are difficult to tackle alone, I will guide you step-by-step from the easiest starting point—from what you need to prepare to make your career shine to coding tests that may seem daunting to attempt.

🎁Course Launch Event🎁

  1. Live Q&A Session


    • We will be holding a live Q&A session in October for early bird students. The detailed schedule and recruitment information will be announced in the first week of October via the "What's New" section and the introduction page banner.


  2. Resume editing for students


    • We are holding a resume feedback event for early bird students. We plan to select 5 students by lottery from those who enroll in the [Theory Version] by October 4th to provide resume feedback. Further details will be announced through the News section in the first week of October.

Recommended for these people

Job seekers who feel underprepared

You can learn practical know-how ranging from resume writing to portfolio and interview preparation.

Junior developers preparing for a job change

We will show you how to prepare for technical and personality interviews from the perspective of a senior interviewer, using real-world question and answer examples.

Experienced developers who feel lost in career management

We provide a roadmap on how to shape your career and job transitions as you build your professional experience.

After completing the course

  • You can learn how to write resumes and self-introduction letters, as well as how to create attractive documents that can be understood at a glance.

  • You can gain an understanding of the knowledge required for employment and career changes, as well as how to study systematically.

  • You can learn how to establish and implement strategies for your own growth and career development.

Features of this course

A job search and career change guide that covers everything from document preparation—such as resumes, cover letters, and portfolios—to the interview process, including technical and final interviews, through specific case studies.

코딩테스트CheatSheet

Coding Test, Essential Knowledge by Category

From simple, accessible quizzes to essential coding test preparation methods, you can grasp step-by-step approach strategies at a glance.
#CodingTest #Algorithm

From core concepts required for technical interviews to server scaling strategies and large-scale data processing methods

You can examine the architectures required for technical interviews and explore expansion strategies along with real-world Q&A examples. #TechnicalInterview #InterviewPrep

What you will learn

📌 Assignment implementation and team projects: do it like this.

Learn how to effectively showcase assignment implementations and team projects on your resume, and make your resume more attractive by choosing topics highly relevant to the job and skill set. We will show you topics worth challenging as assignments and ways to further solidify your skills through team projects. #TeamProject #AssignmentImplementation

Suitable topics for team projects

📌 Build your skills with an easy approach to daunting coding test preparation.

Prepare efficiently with a step-by-step coding test strategy, ranging from easy quizzes to core algorithms and data structures. We introduce checklists and execution methods to help you take on difficult challenges. #CodingTest

Step-by-step coding test preparation strategy

📌 Sample Resume: Detailed examples and explanations are attached so you can complete it just by filling in the content.

📌 Portfolio samples: Try following these portfolio examples and writing tips, designed to be concise and include only the essential information so that interviewers can understand them at a glance. #Portfolio #TechnicalInterview

Instructor Introduction

  • As a developer with 19 years of experience and years of experience as an interviewer at companies like Coupang, LG Fashion, and Kakao, I would like to share my experiences regarding document screening and technical interviews.

  • Having encountered candidates who faced the bitterness of rejection despite having great backgrounds and skills, I pondered how I could help them. As a result, I published a book in 2024 titled [Developer Technical Interview Notes, Hanbit Media] to provide a guide for preparing in the right direction.

  • As a senior who has shared the same concerns regarding employment and career changes, and as a developer who has experienced much trial and error to advance my own modest career, I sought to provide a clear roadmap.



    Related Keywords: Technical Interview, Backend, Java, Spring, Technical Interview, Author of Developer Technical Interview Notes, Interviewer

Notes before taking the course

Learning Materials

  • The PPT file used as the lecture material has been attached as a PDF in the body of Lecture 1.

  • The links explained in each lecture have been attached to the lecture descriptions.

  • The theory section is suitable for all developers preparing for employment or career changes, regardless of the programming language.

Check out the resume and portfolio writing guides and sample documents.

  • All information provided as links in the lecture notes is accessible.


An early bird event is currently underway.

  • We are holding a resume feedback event for those who took the October Theory and Practice courses. Please refer to the "What's New" section for more details.


Recommended for
these people

Who is this course right for?

  • Job seekers struggling with their job search

  • Those who want to overcome the fear of rejection and succeed in getting a job or changing careers.

  • Junior developers who feel their career growth is limited because they don't know what to study.

  • Those who do not know what to prepare for coding tests, technical interviews, and personality interviews

Need to know before starting?

  • Solid understanding of the primary development language

  • Basic CS knowledge

Hello
This is codevillain

Career Verified

3,523

Learners

159

Reviews

41

Answers

4.9

Rating

6

Courses

Backend Developer with 20 years of experience


  • Kakao (2018 ~ 2026, Former Leader)

  • LF (LG Fashion, 2017, Deputy General Manager of IT Platform Team)

  • Coupang (2013~2017, Sr. Software Engineer)

  • Silver Award at the Open Source Developer Competition (2012. Ministry of Knowledge Economy, NIPA)

Main Fields
I have worked for a long time in Java, Spring, and MSA environments. Based on my experience in large-scale data processing, microservice architecture design, complex domain entity design, and team leadership, combined with over 10 years of experience as an interviewer, I would like to help you prepare for interviews and establish a career roadmap.


Lecturing Experience

  • 2026.06 DK Techin Claude Code Lecture

  • 2025.05 Pusan National University AI Utilization Lecture

  • 2024.11 Daegu University Gyeongsan Innovation Academy Career Special Lecture

  • 2024.10 Hanbit Media 2nd Job Seminar Special Lecture for Junior Developers

  • 2024.09 Pusan National University SW Convergence Education Center Career Special Lecture

  • 2024.04 Hanbit Media Career Seminar Special Lecture for Junior Developers

     

Books (Claude Code Master, Developer Technical Interview Notes, Hanbit Media)

More

Curriculum

All

23 lectures ∙ (3hr 10min)

Course Materials:

Lecture resources
Published: 
Last updated: 

Reviews

All

43 reviews

5.0

43 reviews

  • corini님의 프로필 이미지
    corini

    Reviews 3

    Average Rating 5.0

    5

    13% enrolled

    This is my first time writing a career statement in my second year, so I'm going to listen to the lecture on the elements that should be appealing in a portfolio/career statement and try to write it properly again. And it was good to learn about the job postings that I should pay attention to! I'm going to listen to the lecture. Thank you.

    • codevillain
      Instructor

      Thank you for registering for the course review. There is a resume editing event in the news section, so if you need it, please apply. It is a lottery, but it is free. I made the lecture as easy as possible, so you will have no trouble listening to the end. Feel free to ask questions at any time. I hope you complete the course and get good results.

  • hmax3j7970님의 프로필 이미지
    hmax3j7970

    Reviews 4

    Average Rating 5.0

    5

    100% enrolled

    I am a new job seeker. I am studying hard, but I am not sure if I am doing well. I feel like my skills are the same, and I am preparing for the coding test, but I cannot solve the problems, and I am stressed out in many ways. I have a lot to do, but I feel like I am not making any progress, so I was at a loss. After watching the lecture, I got a sense of how to prepare. I was worried about how to improve the documents and portfolio because they were lacking, but I ended up not doing them. After watching this lecture, I will prepare again. I watched the theory lecture while sitting down! Thank you for the lecture.

    • codevillain
      Instructor

      The theory part is 3 hours long, so it's not short, but thank you for watching it all in one go. I hope the lecture was helpful.

  • wnsgur1569님의 프로필 이미지
    wnsgur1569

    Reviews 8

    Average Rating 5.0

    5

    30% enrolled

    It seems like my previously vague job change preparation is now becoming more concrete. Thank you.

    • codevillain
      Instructor

      Hello student. I hope you complete the course and achieve great results. Thank you for leaving a course review.

  • leejinwoo1126님의 프로필 이미지
    leejinwoo1126

    Reviews 27

    Average Rating 5.0

    Edited

    5

    100% enrolled

    I was frustrated because I had been rejected in the document stage for the past 4 years and I couldn’t renew my membership even though I had been taking classes, mentoring, and participating in job challenges. Then I saw this class and was able to find out what I still lacked. (I didn’t express the process and results of my efforts well.) So I decided to get up and challenge myself again. I will refer to this and try to change jobs. Thank you for the great class.

    • codevillain
      Instructor

      Thank you for leaving a sincere review, Jinwoo. If you keep trying, you will achieve your goals. I hope good things come your way.

  • k20019112529님의 프로필 이미지
    k20019112529

    Reviews 3

    Average Rating 5.0

    Edited

    5

    100% enrolled

    Before preparing for a job as a developer, I felt completely lost about how to proceed, but after hearing this guide explanation, I was able to understand what I didn't know and what I need to prepare for in the future. I will organize what I need and make sure to put it into practice so that the author's lecture goals can be achieved. I myself will also put in a lot of thought and effort and try not to give up until the very end. Thank you.

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