• I'm a 0→1 product builder who thrives on turning ambiguous ideas into production-ready services.
• I design and implement resilient backend systems with a focus on concurrency control, caching, and observability to handle large-scale traffic.
• I'm comfortable stretching across the stack, from frontend development to infrastructure management, to drive projects forward.

• Portfolio: Youngwon.me
• CV: youngwon.me/portfolio/cv
• Email: yw7148@naver.com

A resilient concert reservation platform designed for high-traffic scenarios.

• Tech Stack: Java, Spring Boot, JPA, Redis, Kafka, MySQL
• Repository: GitHub
• Highlights:
  • Ensured consistency for seat reservations under high concurrency using distributed locks.
  • Implemented a fair-queuing system using a Redis-based waiting room.
  • Optimized database performance through indexing and load testing.

Personal branding stack covering website, infra, and deployment automation.

• Tech Stack: Kotlin, Spring Boot, Next.js, Nginx, GitHub Actions, AWS (EC2, RDS, S3)
• Repo: Server config · Backend · Frontend
• Highlights: Developed frontend with Next.js, designed and built infrastructure on Oracle Cloud, and automated CI/CD pipeline with GitHub Actions.

Community-driven apartment management service 'Danjinae'.

• Tech Stack: Java, Spring Boot, JPA, MySQL, Jenkins, Naver Cloud Platform
• Repository: GitHub
• Highlights: Led a team of 5 to implement the end-to-end Web, Server, and App system.

Languages & Frameworks
Kotlin · Spring Boot 3 · Java · Spring JPA / Data / Cloud · QueryDSL

Databases & Caching
PostgreSQL · MySQL · Redis · Kafka

Infrastructure & DevOps
AWS (EC2, RDS, S3) · Nginx · Jenkins · GitHub Actions · Docker