※ Backend / Full Stack Engineer (Java, Python, Angular, MySQL, Oracle DB, Kubernetes) - Designed and developed web applications for monitoring data management, consolidating data from multiple fabs, and delivering results through UI tables, charts, and reports, while enhancing legacy system reliability by refactoring monolithic applications into microservices on Kubernetes. - Built a Conductor Workflow system to transform manual processes into reusable, cross-platform modules, including web APIs and scheduling executors. Reduced process time by more than 70% through collaboration with vendors on API integration. - Developed management tools and diagnostic aids for VM operations, automating daily tasks and providing an assisted log analysis tool to simplify the work of operators without domain experts. ※ Site Reliability Engineer (Python, MariaDB, Cassandra, Kubernetes) - Provided database services in a Kubernetes cluster for IT DevOps, similar to a SaaS model, ensuring high availability, monitoring with Prometheus and Grafana, backup/recovery mechanisms, and automating database deployment through Infrastructure as Code (IaC) concept to standardize templates and prevent manual errors.