Strong hands-on experience in designing and architecting scalable Java microservices, event-driven architecture using Kafka producers/consumers, topics, partitions, consumer groups and offset management, API/integration design, resiliency, exception handling, security, logging and distributed-system troubleshooting. Java/J2EE, Java 8/11/17+, Spring Boot, Microservices Architecture, Apache Kafka, REST APIs, Spring Cloud, Hibernate/JPA, SQL/Oracle, Design Patterns, Docker/Kubernetes, CI/CD, Git, Maven/Gradle, Unit Testing (JUnit/Mockito), application performance tuning and production troubleshooting.