Hello! 👋
I'm Gym Coding, a coding education creator 😊
I teach non-developers so they can follow along as easily as possible, and I teach with enough depth to satisfy professionals.
I am currently a full-stack developer with 15 years of experience, running a coding education company and building IT services myself.
I have personally designed and built everything from frontend, backend, and AWS infrastructure, including service development for major corporations like KT and Kia, the Cafe24 e-commerce platform, smart city IoT data platforms,
and even my own services that I currently operate.
Currently, while focusing on education, I maintain my industry expertise by directly developing my own services.
My job as an instructor is to translate that real-world experience into a language that even beginners can understand.
🏆 Proven Performance
🥇 Inflearn 2026 Claude Code Lecture BEST 1 - Claude Code Complete Master
🏆 Inflearn Awards 2025 Bestseller - React Complete Master
🔥 Inflearn 2025 'Hottest Course Right Now' - Claude Code Complete Master
🎬 YouTube 49k+ Subscribers · 3.6M+ Cumulative Views
👨💻 Experience
15-year Full-stack Developer · Current IT Startup CEO
Frontend: React · Vue · TypeScript
Backend: Node.js · Java · Spring · Python
Infrastructure: AWS · Serverless · Lambda Architecture Design
Inflearn Knowledge Sharer
Startup (Founder)
Experience in patent and trademark application and registration
Selected for multiple government startup support programs (including 'Excellent' at Smart Venture Campus, etc.)
Corporate Training (B2B)
Multicampus - Offline 'Claude Code' training for corporate professionals
Shinhan Card Developer Training - Hosted by Multicampus, Online Live
Special Lecture at Korea Software HR Development Institute · IT Mentor for Government Agencies
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