Practical Harness Engineering for Senior Engineers at Korea’s Top Tech Companies: Claude Code in a Real-World Spring Boot Environment
This is the definitive course on Claude Code. We’ll delve into how and why Claude Code works all the way to the end, teach you how to apply the components of harness engineering yourself, and even dissect publicly available production code firsthand. Take the know-how of a developer with 10+ years of industry experience and become a key talent in the age of AI agents.
553 learners
Level Intermediate
Course period Unlimited
[Lecture Update] The Claude Code command lecture has been updated
Hello, a lecture covering Claude Code commands has been updated in the Standard Guide to Claude Code! 😀
Since it covers almost all commands, the volume has increased significantly, leading to the creation of an entirely new section. (As a result, the subsequent sections have been pushed back by one.)
Section 2. Claude Code Core Commands

Approximately 1 hour and 40 minutes of content has been added, and the latest updates as of August 2026 have also been reflected. In the lecture, we will practice by running key commands together in the terminal. (& All were filmed using the latest version)
You might be worried about whether you need to memorize all these commands, but of course, you don't have to memorize them all. I have specifically pointed out the commands I frequently use in practice, so please refer to those sections.
I have also attached the lecture materials as a PDF file, so please feel free to download and use them!


In addition, Claude Code is currently undergoing rapid changes. To prepare for these fast-paced developments, I plan to use Claude Code in practice every day to research and share standard, effective methods.
So, with the standard practices of Claude Code, I will continue to support your learning journey and return with more helpful update news.




