At BTC STUDIO, I develop and maintain a Java microservices office-management platform for a Japanese enterprise customer. I built IoT occupancy and floor-map features, and fixed production issues in visitor and service-request flows with same-day hotfix releases.
Previously, at TOMOSIA VIETNAM COMPANY and 3S SOFTWARE COMPANY, I developed backend systems and REST APIs and led small teams on enterprise projects. My work has included deploying services on AWS, supporting production systems, and developing applications with Java, C#, and .NET.

