• Implemented microservices architecture using Spring Boot and developed RESTful APIs for microservices communication.• Developed backend applications using Spring Boot framework, for rapid application development.• Designed and implemented scalable, secure cloud architecture based on Amazon Web Services (AWS).• Utilized AWS services such as EC2, S3, RDS, Lambda & DynamoDB for various application requirements.• Implemented security best practices on AWS, including IAM policies.• Implemented access control policies, versioning, encryption, and lifecycle rules for S3 buckets.• Developed serverless applications using AWS Lambda, API Gateway, and DynamoDB.• Developed REST APIs for seamless integration with external systems.• Migrated existing application into REST based Microservices to provide all the CRUD capabilities using Spring Boot.• Implemented OAuth 2.0 based authentication and authorization mechanisms for securing microservices endpoints.• Used Apache Kafka as a messaging system to produce and consume services from storage topics.• Deployed the application on Tomcat Application Server and used Maven for build process.• Implemented CI/CD pipelines using Jenkins to automate the build, test, and deployment processes.• Extensively used GIT for version controlling and regularly pushed the code to GitHub.• Used Spring Tool Suite (STS) as an Integrated Development Environment (IDE) with Java Plugins.• Conducted unit tests, integration tests, and end-to-end tests for microservices using tools like Junit.• Created complex JIRA workflows, conditions, set up and maintained JIRA using advanced scripts to extend workflow capabilities.

• Developed applications using the latest Java/J2EE technologies and worked with the latest features of Java8.• Implemented Java 8 concepts like collections, multithreading, object-oriented programming, exception handling to develop an application module using test driven methodology.• Developed Core Java programs for all business rules and workflows using Spring and Hibernate frameworks.• Implemented Spring MVC framework which includes writing Controller Classes for handling requests, processing form submissions and performed validations.• Used Spring Data repositories to perform Create, Read, Update and Delete – CRUD operations.• Developed Hibernate mapping files using different mapping strategies such as table per class hierarchy and also used Hibernate Persistence to interact with DB.• Used Hibernate in data access layer to access and update information in the database.• Developed stored procedures and complex packages extensively using PL/SQL and Oracle database.• Implemented web-services using JAX-WS and also Restful web services with JAX-RS using Jersey framework.• Used JMS for asynchronous exchange of critical business data and events among J2EE components and legacy system.• Extensively used Eclipse for developing, debugging, integrating and deploying the application.• Performed unit testing and system integration testing using Junit for delivering stable product in every release.• Developed all custom processes, workflows and schemes within JIRA to accommodate the organization’s needs.