. Engineered scalable backend systems using Java, Spring Boot, Microservices, REST APIs, and SQL, supporting highvolume enterprise applications. 2. Designed, developed, and modernized scalable microservice-based solutions by implementing API-first architectures, integrating distributed services, and transforming Monolithic Applications into loosely coupled Microservices focused on scalability, resiliency, and maintainability. 3. Built robust backend services leveraging Asynchronous Processing, Multithreading, and distributed architecture patterns. 4. Enhanced application performance through Database Optimization, efficient query design, and code refactoring. 5. Integrated security controls, Automated Vulnerability Scanning, and CI/CD pipelines to deliver secure and reliable software. 6. Diagnosed and resolved complex production issues, ensuring service stability and effective root-cause analysis