Java backend engineer at NOL Universe (Yanolja) in South Korea, working on accommodation supply systems. Previously, I worked on product, payment, and settlement services at Yogiyo.
- Accommodation supply: Designing core domains for accommodation, inventory, pricing, and orders, and standardizing integrations with external suppliers.
- Payment systems: Migrating legacy payment services without downtime, with staged traffic shifts, rollback paths, and data consistency checks.
- Data processing: Building large batch pipelines for product data and payment reconciliation, with attention to correctness, performance, and recovery.
- Service operations: Moving services to Kubernetes and improving deployment behavior, graceful shutdown, and observability.
Java · Spring Boot · MySQL · Redis · Kubernetes · AWS