Re-engineered an EdTech platform across backend, data, and frontend boundaries: migrated service, repository, and controller layers to RxJava 3, introduced non-blocking flows and backpressure handling, and combined Redis caching with indexed persistence to reduce average query latency by 45%. Coordinated these changes with bilingual React experiences, demonstrating the ability to translate product needs into cohesive improvements across the full stack.

Contributed to a real-time coding platform for K-12 learners, connecting Spring Boot APIs, WebSocket and Socket.IO sessions, and a RabbitMQ-based asynchronous grading pipeline. Worked across client and service boundaries to coordinate live state, event-driven feedback, and Kafka-based activity flows, balancing interactive responsiveness with dependable backend processing while reducing UI latency by 34%.