I worked on building and maintaining full-stack web applications using Java, Spring Boot, React, and REST APIs that supported important day-to-day business operations. My role involved creating scalable backend services, as well as designing clean, responsive frontend components to improve the overall user experience. I also helped secure applications by implementing authentication and authorization using Spring Security and JWT. In addition, I worked with databases to improve query performance and data reliability. I deployed applications to AWS and supported CI/CD pipelines to streamline releases. I collaborated closely with product managers, QA, and DevOps teams in Agile sprints, and regularly troubleshot and resolved production issues to keep applications stable and reliable.