• Used Spring Boot stack, which is radically faster in building cloud based Microservices with very less configuration.• Implemented server side reactive REST API’s using Spring Web Flux with Java 11 features.• Integrated Microservices with HibernateORM using Spring Boot and writing HQL queries for data access.• Developed the application using n Spring modules such as Spring MVC, Spring Boot, Spring Cloud, Spring Security, Spring Batch and Spring Rest.• Written multiple batch jobs using Spring Batch framework where we configured both annotation and xml-based configuration to support various business functionalities.• Responsible for using AWS SNS/SQS/SES for implementing asynchronous workflow.• Managed Amazon Web Services (AWS) like EC2, S3 Buckets, Lambda, ELB, Auto-Scaling, AMI, IAM through AWS Console and API Integration.

• Developed REST API's using Spring MVC and Spring Boot, hosted all Microservices on AWS to setup application and configured environments.• Worked on integration of Spring Modules with AWS Modules in order to consume third party services.• Created Amazon EC2 instances using Elastic Bean Stalk and deployed the application on it.• Developed RESTful Web Services with JAX-RS using Spring Boot and Microservices Architecture.• Created Spring Batch jobs for reliability, robustness and essential automatic processing using Spring Batch.• Used OAuth 2.0 authentication framework to provide security to Restful web services by generating access token in order to access protected resources.• Developed Spring Controllers, Service Components, DAOs, Web Services and UI Integration for processing the billing and payments dates.• Used Spring JPA and Hibernate with entity beans for interacting persistence layer for CRUD operations.• Created services to consume REST API's and to communicate between components using Dependency Injection provided by Spring Framework.• Worked on Java Collections API for handling the data objects between the business layers and the front end.• Designed user interface screens using HTML, DHTML, CSS, and JSP, ReactJS and validating using jQuery & JavaScript.• Utilized Java 8 and XML/JSON requests to be send as SOAP and REST API calls to these interfaces using XSL, XSLT, Angular and HTTP Client.