As a Software Engineer at Rakuten Symphony, I specialized in developing scalable backend systems for Rakuten Mobile, successfully handling over 1 million orders. Using Java 11 and Spring Boot, I architected robust solutions that significantly improved system performance and reliability.

My technical achievements include designing RESTful APIs that enhanced communication between 23 microservices, boosting data accuracy by 30%, and reducing service call latency. I played a crucial role in maintaining critical CRM microservices, including user, account, and quote management systems, achieving 92% uptime.

Through strategic optimization and code refactoring, I reduced API response times by 25% and elevated unit test coverage from 17% to 81%. I also strengthened system security, advancing compliance from 21% to 87%, while implementing monitoring solutions using Grafana and Kibana that improved application availability by 75%.