At UNLIMITED QUANTITY MEDIA CO., LTD, I reduced analytics response times from minutes to under one second across multi-billion-row datasets using indexed PostgreSQL and ClickHouse, sharding, and continuous data ingestion.
I build REST APIs, payment microservices, authentication systems, ingestion workers, and customer-facing dashboards with Java, Spring Boot, Express, Python, React, and Next.js. I’ve also deployed blockchain nodes and maintained reliable Linux infrastructure with Nginx, load balancing, failover, rate limiting, Redis, and Kafka.
I’m also building CommerceCore, an event-driven e-commerce platform using independently managed Spring Boot microservices, PostgreSQL, Docker, Kafka, and the transactional outbox pattern.
