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zzzyoonnn/README.md

👋 Hi, I'm Jiyoon

Backend Engineer interested in transaction processing, payment systems, and distributed systems.

I’m interested in building reliable financial systems that preserve atomicity, consistency, and data integrity under high concurrency.

Currently exploring transaction processing, payment systems, JVM performance, and distributed systems.

🛠 Tech Stack

  • Backend: Java 21, Spring Boot, Spring Data JPA
  • Data: MySQL, Redis
  • Messaging: Kafka
  • Infrastructure: Docker, AWS (EC2, RDS, S3)
  • Build: Gradle

🎯 Professional Interests

  • Core Banking Systems
  • Transaction Processing
  • Payment Systems
  • Financial Data Integrity
  • High-Reliability Backend Systems

💡 Engineering Interests

I’m particularly interested in concurrency control, idempotency, transaction boundaries, and failure handling in financial systems.

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  1. FinFlow-backend FinFlow-backend Public

    Spring Boot–based backend service implementing core banking domain logic for FinFlow.

    Java