At RAKUTEN, I developed four IAM microservices for OAuth 2.0/JWT authentication and social identity management. I also integrated Istio and configured HAProxy with a dedicated Request Authorizer to handle authentication and authorization across distributed services.
For RetorX, I engineered historical service-metrics storage that reduced Kibana storage usage by 85% and monitoring infrastructure costs by 40%. I also built a pipeline for API logs with anomaly detection and AI-powered analysis, reducing incident resolution time by 35%.
