At NOMURA, I optimized Java and Spring Boot APIs for the Trade Distribution Platform, cutting search response latency from about two minutes to about 20 seconds. I also developed broker onboarding workflows for files containing up to 100k+ trades.
I rewrote a legacy web application from React 15 to React 18, reducing load time by about 80%, and replaced SSH-based log triage with Grafana, Prometheus, and OpenTelemetry. Outside work, I built a conversational video RAG engine that answers questions with links to exact video timestamps.

