I developed and implemented microservices and customized RESTful web services using Spring Boot, facilitating efficient JSON data transmission. My role involved building components for a Reporting Dashboard with Spring MVC, Spring Boot, and Hibernate, and creating modules with Java APIs, Java Collections, and Java 11 features. I designed dynamic user interfaces with Angular, Angular14, and JavaScript, and implemented data migration and business module integration using Spring Data MongoDB and JPA. Additionally, I worked with Kafka for messaging, developed and tested applications with JUnit, Mockito, and WireMock, and performed backend REST API testing with Postman and Swagger. I configured and managed AWS services, implemented CI/CD pipelines with Jenkins, utilized JIRA for issue tracking, and managed containerized applications using OpenShift.

I actively participated in all stages of the SDLC using agile methodologies, including daily Scrum meetings, sprint reviews, and demos. I developed application modules with design patterns such as Business Delegate, Factory, and DAO, and implemented microservices using Spring Boot for processing and delivering JSON data to the frontend. I utilized dependency injection, IOC, and AOP for handling bean references and cross-cutting concerns, and designed MySQL databases with optimized SQL queries, JDBC, Hibernate ORM, and stored procedures. Developed interactive features using React.js, JavaScript, and HTML, focusing on reusable components and state management with React hooks and the context API. It integrated dynamic data with RESTful APIs, optimizing performance and accessibility in user interfaces. I used ActiveMQ for efficient messaging, managed EC2 instances for high availability, and automated tasks with AWS Lambda and Step Functions. CI/CD pipelines were streamlined using AWS Code Pipeline and Jenkins, with version control through GIT and Bitbucket, and defect tracking via JIRA. Testing was conducted with JUnit, Mockito, and Postman, and I configured Docker and Kubernetes for containerized deployments.

I designed and executed an MVC framework for applications using Spring and J2EE technologies, implementing and refactoring code across Spring MVC, Spring Batch, Spring JPA, and Spring Web Services. I utilized Spring for middle-tier development and Hibernate for ORM, following the MVC design paradigm. My work included developing REST APIs to convert and insert affiliate data from Excel into JSON and a database, managing dependencies with Maven and Gradle, and conducting unit testing with Postman, JaCoCo, and SonarQube. I leveraged Java 8 features like lambdas and streams for modern applications, optimized data pipelines with Snowflake, and transitioned from Waterfall to Agile methodologies for project development. Additionally, I used Git for version control and engaged in requirement gathering and system analysis to guide development phases.