zion sieun0322

👋 Hi, I'm Sieun Lee

📍 Based in Seoul
🚀 Curiosity-driven Web Developer, who enjoys exploring new technologies and deep-diving into framework internals.

ecommerce-be E-COMMERCE BACKEND

Scalable architecture reflecting large-scale system design.

lifepuzzle-rn CROSS-PLATFORM APP

Mobile frontend for intergenerational story archiving.

zion-web INFRASTRUCTURE

Self-hosted automation and server infrastructure.

Modernizing Query Parsers for Jakarta Persistence 4.0
- Refactored ANTLR4 parser definitions (Jpql.g4, Eql.g4) to support optional ELSE clauses in CASE expressions.
- Resolved technical mismatch between persistence providers (Hibernate 6+) and the abstraction layer.
- Successfully merged and backported to maintenance versions.

💡 "Deeply understanding the tools we use is the first step toward true engineering excellence."