Solving Developer Job Seeking and Changing Jobs in One Go: Tips from a Senior Interviewer [Practical Guide]

This is a partial lecture from the theory section of a comprehensive career guide course that covers everything you need to prepare for developer job hunting and career transitions, including resumes, portfolios, technical interviews, and personality interviews. The theory section covers the process of finding companies that fit you, analyzing job postings, preparing for interviews and coding tests, and everything you need to know to prepare your resume and portfolio.

Learn how to utilize RabbitMQ to implement asynchronous architecture, the most fundamental method for processing large-scale data, through a tutorial format that makes it easy to understand from basics to practical application based on SpringBoot 3.3. Learning materials (Notion links and Git Branch URLs) are provided for each lecture chapter. Please be sure to check the class notes.

This is a career guide course that summarizes everything you need to prepare for getting a developer job or changing jobs, including resume, portfolio, technical interview, and behavioral interview, all in one place. In the theory section, we've organized the process of finding the right company for you, analyzing job postings, and preparing for interviews and coding tests.

Based on my experience starting as a non-major and working my way from startups to major corporations, I have compiled job search strategies and execution methods that have proven effective in practice.

A course where you can understand core network concepts and train to explain them verbally for interviews.

A course where you understand the core concepts of Java and Object-Oriented Programming (OOP), and even train to explain them verbally in interviews.

Are you feeling anxious because you've only been following along and copying code? We’ve packed this with the core principles of how the web works and the criteria for choosing technologies, without just focusing on implementation. From foundational concepts to React 19 and Vite 7, we will help you draw the big picture for frontend development in 2026!

This is a [Backend, Resume Enhancement] class prepared for job seekers and junior developers.

From documents to interviews, the A-Z of designer employment is included. We will show you in detail how to increase your chances of passing by watching the interview process of an actual applicant that you cannot see anywhere else.

Beyond the basics of API design, CRUD implementation, and JWT authentication, all the way to backend architecture design! This is an introductory system design course to help you create 'your own backend architecture' so you can confidently discuss design experience in interviews.

A course where you can understand core data structure concepts and train to explain them verbally for interviews.

Do you feel overwhelmed just thinking about the moment of persuasion? Stop relying on emotions and intuition for negotiations! With former Apple business coach Jasmine Han, you can take control of negotiations in just 15 minutes a day for one month.

For those who have chosen a career in information security/information technology and are preparing to move to large corporations/financial institutions, we will reveal our strategy for passing the exam. A current CISO who has personally recruited and recommended numerous people will share his secrets for passing the exam. He has heard from his acquaintances, security company CEOs and executives of large companies, and compiled a recruitment bible by collecting a vast amount of recruitment secret data.

Listening to the interview speech can help you pass the interview with flying colors.

A course where you understand core JavaScript concepts and train to explain them verbally for interviews.

Based on questions from major game companies such as Nexon, NCSoft, Krafton, and Netmarble, this covers core C++ concepts and problem-solving skills that job seekers and career changers must know. Pass job tests and technical interviews all at once with actual exam questions from the past 10 years.

"Developer Portfolio Completion Practice for IT Job Seekers" is a practical course designed to transform projects created in class from simple outputs into portfolios and interview materials that can persuade recruiters. It covers step-by-step how to organize projects, design the first page, expand case studies into structured formats, and connect these elements to interview answers, application routines, and operation/improvement records. This course is particularly suitable for graduates and entry-level developers who have created a portfolio but lack confidence in it or feel lost about what to do next. Through this course, learners will move beyond simply having "made something" and learn how to reconstruct their projects into "documents and evidence that can be utilized for employment."

Based on questions from major game companies such as Nexon, NCSoft, Krafton, and Netmarble, this covers core C++ concepts and problem-solving skills that job seekers and career changers must know. Pass job tests and technical interviews all at once with actual exam questions from the past 10 years.

This course was created to solve a common problem many people face while preparing for developer jobs: "I studied CS and data structures, but I get tongue-tied during interviews." While conducting actual interviews at companies like Naver, Kakao, and Toss, I noticed that most candidates have memorized concepts but cannot explain why those concepts are necessary or how they are applied in real-world situations. Rather than simple rote memorization, this course teaches you how to understand the interviewer's intent and provide more persuasive answers to the same questions. Whether it's the OSI 7 layers, data structures, or coding tests, we focus on why you need to know them, when they are used, and how to speak about them to receive a positive evaluation in an interview. This course is for those who want to become developers who can explain what they understand in their own words, rather than just giving the same answers as everyone else.

Through this lecture, students will be able to learn the basic and post-processing technology flow of semiconductors, and will be able to learn the content necessary to prepare for interviews at post-processing semiconductor companies.

It covers the essential core of computer science that remains unchanged in the AI era. You can prepare for system design interviews for employment or career transitions.

A course that helps you understand core database concepts and trains you to explain them verbally in interviews.

DevOps Interview Preparation: Master your interview preparation for Git, Docker, CI/CD, Terraform, Ansible, Kubernetes, and Monitoring.