• Software Development Life Cycle (SDLC) which includes development, design, analysis, testing and Integration of various web based and client/server applications in multi-platform environments with Java/J2EE technologies.• Implemented an express-GraphQL library to mount a GraphQL API server on the user-configured HTTP endpoint.• Involved inResponsive Web Design for developing the partner Homepages using HTML5, CSS3, JavaScript, ReactJS, NodeJs, and JQuery. • Involved in using NoSQL (MongoDB) data models document, key-value & wide column or graph model.• Involved in building applications that works on mainly Groovy grails, Html, CSS, Rest Services, Java Script, Maven, Hibernate.• Create and maintain highly scalable and fault tolerant multi-tier AWS and Azure environments spanning across multiple availability zones using Terraform and CloudFormation.• Involved in develop and test environments of different applications by provisioning Kubernetes clusters on AWS using Docker, Ansible, and Terraform• Involved in terraform scripts from scratch for building Dev, Staging, Prod and DR environments.• Developed RESTful API services that work as a middleware between our application and third-party that will be used using Golang.• Written Cloud Formation Templates (CFT) in JSON and YAML format to build the AWS services with the paradigm of infrastructure as a code.• Experience in building isomorphic applications using React.js and Redux with GraphQL on server side.• Strong Knowledge of working with GraphQL schema, queries, and mutations to interact with MongoDB and several other data layers.• Involved in CI/CD process using GIT, Jenkins job creation, Maven build CreatingDocker image, and deployment in Kubernetes. • Involved in designing the user experience interface UI/UX strategy, UI requirements, converting findings into UI designs.

• Created various REST full Web services using Spring Boot for interfacing with the request Object.• Integrated AWS Lambda, S3, CloudWatch, and API Gateway to create serverless Microservices.• Implemented data access layer DAO using Hibernate, JDBC, Spring Hibernate template, and Spring JDBC template.• Designed and implemented custom message adapter components using Apache Active MQ to facilitate message flow between Microservices, based on RESTful APIs implemented with Spring Boot and Spring MVC.• Contributed to the development of a service-based architecture using open-source technologies like Hibernate ORM with JPA Annotations.• Used Spring Boot with an embedded Tomcat Server.• Built a real-time data streaming pipeline using Kafka.• Designed the UI using JSP, HTML5, CSS3, Ajax toolkit, and JavaScript.• Utilized React-Router to transform the application into a Single Page Application (SPA).• Developed user interfaces using JSP, Spring Tag Libraries, and Ajax to simplify application complexities.• Created buckets in AWS for file storage, enabling versioning and implementing security measures for stored files.• Wrote SQL and PL/SQL queries to access, manipulate, and update the Oracle database.• Implemented log4j for effective error and debug message logging.• Launched and configured Amazon EC2 (AWS) Cloud Servers using Linux AMI and configured them for specific applications.• Used Angular HTTP clients to make Ajax calls and load data into UI components such as tables, grids, and models.• Utilized Apache Kafka for sending message objects to client queues and topics.

• Involved in the development using Agile Development process to gather and analyze the requirements of the Application.• Created test suites for each service using Azure end points in Ready API to test the services created in Azure APIM.• Used Hibernate Framework for mapping entities to database tables.• Involved in building application that works on mainly Groovy grails, Html, CSS, Rest Services, Java Script, Maven, Hibernate.• Worked closely with the Microsoft team to implement Azure DevOps solutions for service migration.• Extensive experience with core java technologies in Multi-Threading, Synchronization and Exception Handling to gather various servers in parallel.• Written Cloud Formation Templates (CFT) in JSON and YAML format to build the AWS services with the paradigm of infrastructure as a code.• Developed Spring Bean Classes (Service Classes) for implementing Business logic and configured beans to manage bean lifecycle using annotations and xml-based configuration. • Implemented the application using Spring Boot and handled the authorization, authentication features by using Spring Security.• Used Spring MVC module to write REST controllers, map URL's for the request and present with different views for different use cases. • Used SpringFramework AOP Module to implement the logging in the application to know the application status.• Used Spring MVC module to develop MVC Architecture. Integrated the application with Spring-MVC using Spring Boot, Spring Dependency Injection (DI), and Spring Annotations.• Implemented the persistence layer using Hibernate-ORM worked on Spring Web Flow on Spring MVC for building flows in our web application.

• Involved in Agile Development to gather and analyze application requirements, creating test suites for services using Azure endpoints in Ready API for Azure APIM testing.• Built applications using Groovy, Grails, HTML, CSS, REST Services, JavaScript, Maven, and Hibernate, while collaborating with Microsoft on Azure DevOps for service migration.• Extensive experience with Java technologies in Multi-Threading, Exception Handling, and using Hibernate for mapping entities to database tables.• Wrote Cloud Formation Templates (CFT) in JSON and YAML to provision AWS services, and developed Spring Bean Classes for business logic, managing lifecycle with annotations and XML.• Implemented Spring Boot for authorization, authentication, and REST controllers with Spring MVC, including Spring AOP for application logging and developed MVC architecture with Spring Boot and DI.• Built the persistence layer using Hibernate-ORM and Spring Web Flow, developing Microservices deployed on AWS and utilizing Jersey for RESTful Web Services with data transfer in JSON.• Designed RESTful web services using JAX-RS API, secured with Spring Security, while implementing Java design patterns and optimizing applications using efficient data structures.• Designed web pages and user interfaces with HTML5, CSS3, JavaScript, React.js, Node.js, and MongoDB, building Microservices-based cloud architecture with Spring Boot and Spring Data Framework.• Employed Spring MVC Transaction Management and Hibernate cache concepts, using log4j and JUnit for testing and logging, while developing the UI layer with AngularJS.

• Analyzed application requirements and problems on the client side and worked in Angular 8 and Bootstrap using JavaScript, TypeScript, HTML and CSS respectively. • Planned solutions and developed web applications along with team members through hands-on coding and solved relevant problems and errors.• Involved in building applications that works on mainly Groovy grails, Html, CSS, Rest Services, Java Script, Maven, Hibernate.• Participated in meetings and shared ideas on upgrading and updating projects through advancing technologies. • Written Cloud Formation Templates (CFT) in JSON and YAML format to build the AWS services with the paradigm of infrastructure as a code.• Practiced Java-8 features such as Lambda Expressions and Functional Interfaces to make work more efficient and faster. • Developed and tested multiple web applications using Rest API and annotations by combining Spring framework, Postman and MySQL database.• Performed debugging, worked on multithreading, handled various exceptions and security issues in the process of development and deployment. • Worked in tasks related to Object-Oriented Programming and Object-Relational Mapping by implementation of MVC and architecture.