•Designed and implemented microservices using Java and Spring Boot, enhancing modularity and reusability, resulting in a 20% increase in API reliability.•Built and maintained full-stack applications using React, JavaScript, HTML, CSS, and JSP, achieving dynamic user interfaces across devices.•Documented APIs with Swagger, improving API communication and reducing integration time with front-end and third-party services.•Optimized SQL queries and managed Oracle and DB2 databases, improving data retrieval speeds by 40% across critical services.•Configured monitoring and alerts using Splunk and AWS CloudWatch, reducing incident response time by 35% and enhancing reliability.•Built and maintained CI/CD pipelines on AWS using Jenkins and Git, streamlining deployment cycles and reducing build times by 40%.•Automated testing and deployment workflows across AWS environment, enabling faster releases and consistent configurations across environments.•Contributed to Agile practices by actively participating in sprint planning, retrospectives, and stand-ups, achieving a 95% sprint completion rate.•Developed comprehensive unit and integration tests using JUnit and Mockito, achieving 90% test coverage and reducing production bugs by 20%.•Supported UAT setup and testing environments on AWS, providing documentation that resulted in smoother handoff and reduced post-launch issues.•Managed Maven build processes to ensure stable, consistent builds across all development stages.•Utilized IntelliJ, Postman, and Eclipse for rapid development, testing, and debugging, expediting delivery timelines and enhancing code quality.

• Built responsive UIs using React, JavaScript, HTML, and CSS, developing key front-end components and achieving a 25% improvement in page load speeds by optimizing resource handling.• Implemented RESTful services in Java and Spring Boot, contributing to backend structure for scalable and modular application design, and documented APIs using Swagger to improve collaboration with the frontend team.• Assisted with SQL query optimizations and database schema for Oracle, reducing query execution times by 15% and improving data efficiency.• Participated actively in Agile sprints, collaborating with cross-functional teams to achieve sprint goals, contribute to sprint planning, and work on process improvements.• Developed unit tests using JUnit and Mockito to ensure application stability, achieving 75% test coverage and helping to detect bugs early in the development cycle.• Supported User Acceptance Testing (UAT) by collaborating with the QA team to troubleshoot issues, improving system reliability before deployment.• Managed dependencies and build processes with Maven to ensure consistent build stability across environments.• Utilized IntelliJ and Postman for efficient coding, testing, and debugging processes.