• Enhancing and maintaining the event-driven microservices which communicate and push/pull data towards each other through the RabbitMQ messaging queue for asynchronous communication.• Designed and Implemented services that will receive severe feedback from the database and sent it for analysis to the PEGA. • Implemented Authentication and authorization with the help of backend services using JWT/session-based authentication. • Implemented Creational Design Pattern in Java and Spring Boot to remove tight coupling between various other services, optimizing codebase. • Created a docker file to containerize the changes and commit it to the Bitbucket for pushing it to the testing environment.

In this project, the Spring framework was utilized for Inversion of Control (IOC), Spring JDBC, Spring AOP-based transaction management, and unit testing. Design patterns such as Singleton, Data Access Objects, Factory, and MVC were employed. POJOs and DAOs were created using Spring JDBC annotation mappings. NoSQL database experience was gained with MongoDB for managing large datasets. GIT repositories were used for version control. Angular and regular expressions were used for client-side and server-side form validation. API security was implemented through OAuth2 token-based authentication/authorization using Spring Security. Data exchange between application modules utilized JSON along with XML.