High-Traffic Restaurant-Tech & Ordering Platform\n\nArchitected and operated Java / Spring Boot microservices and TB-scale data infrastructure for blayn.com, processing millions of daily transactions under strict Japanese reliability standards.\n\n## Key Architectural Achievements\n- High Concurrency: Millions of daily transactions processed with zero reconciliation errors.\n- Data Scalability: TB-scale analytics and operational database infrastructure.\n- Ecosystem Integration: Social network booking/order API (Gboss), Mobile Order from guest phones, and self-checkout kiosk systems.