Backend Engineer (9+ years) specializing in System Modernization and Stable Architecture.

I believe engineering is about solving business problems through technology and providing real value to users. I enjoy the small happiness of solving each problem one by one.

• Transitioned existing systems into Layered Architectures and RESTful APIs to ensure scalability.
• Built a real-time video class platform to internalize technology and reduce external dependency.
• Architected a feedback pipeline using Gemini AI to optimize operational load.
• Designed an on-demand calculation model for availability slots to remove tens of millions of redundant rows and implemented Redis Distributed Locks to guarantee data consistency.

• Backend: Java (Spring Boot), ASP.NET (C#), ASP, PHP
• Frontend: Next.js, TypeScript, Tailwind CSS, React
• Database & Cache: PostgreSQL, Redis (Redisson Distributed Lock), MSSQL, MySQL
• Infra & DevOps: GCP (Associate Cloud Engineer), Docker, Git, CI/CD, IIS
• Core Tech: LLM (Gemini API), WebRTC (Twilio), STT/TTS

• I find great fulfillment when the technology I build enhances user convenience and drives business growth.
• I enjoy the small happiness found in the process of solving technical challenges one by one.
• I facilitate swift decision-making by explaining complex technical issues in a clear, accessible language for non-technical colleagues.