Raj Kumar Email & Phone Number

Atlanta, Georgia, United States

• Proficient in Java development, with expertise in Java 8/11 features and leveraging Spring Boot framework to design and develop robust, scalable, and high-performance applications.• Designed and implemented RESTful APIs using Spring Boot, facilitating seamless communication between various components of the application ecosystem.• Designed and developed application using Oracle ADF, implementing robust, scalable solutions for key business processes, improving overall system efficiency.• Developed and managed ADF Business Components like Entity Objects, View Objects, Application Modules for seamless interaction with the database.• Leveraged the latest features and enhancements introduced in Java 11, such as local variable type inference, HTTP client API, and new string methods, to enhance code readability, performance, and maintainability in Java applications.• Designed NoSQL data models in Mongo DB to support high performance read and write operations for application architecture.• Golang and Java were used as a backend REST service while AngularJS was used for the user interface.• Demonstrated expertise in XML and XSL fixes, resolving intricate data transformation issues and ensuring compliance with industry standards.• Created and configured Micro-Services architecture and integrated with React application.• Responsible for creating efficient design and developing User Interaction screens using HTML5, CSS3, JavaScript, React.JS, Redux and Bootstrap. • Extensive experience in developing dynamic, responsive, and user-friendly web applications using React.• Built and maintained Java-based microservices that interact with Mongo DB, handling complex business logic and ensuring consistency in eventual consistency models.• Worked on robust authentication and authorization mechanisms in RESTful APIs using Spring Security, OAuth, and JWT (JSON Web Tokens), ensuring secure access control and data protection in microservices-based architectures.

Westlake, Tx

• Involved in Requirement gathering, Design, Analysis, and Code development by following agile methodology. • Developing Spring Boot based Micro Services using the annotations & implementing architecture patterns, Used Spring Rest/JSON to expose Micro Services APIs.• Used JPA/Hibernate in persistence layer and developed POJO’s, Data Access Object (DAO) to handle all database operations.• Used JPQL (Java Persistence Query Language) for connecting to database and fetching results in replacement with traditional methodologies.• Developed several RESTful API web services which produces both XML and JSON to perform tasks, leveraged by both web and mobile applications.• Developed the application by utilizing Java 8 features like lambdas Expressions, Time API, Streams, functional interfaces.• Used new Java 11 features such as Lambdas, Streams, Observables and Completable Features.• Used Kotlin for developing, managing, and maintaining microservice based applications.• Used Kotlin for implementing new modules in the application. • Had good experience on converting Java code to Kotlin code and utilizing Kotlin features.• Identified and created indexes, mappings and data in Elastic search and used Elastic Search REST API's both single and multi-document API's. APIs like Index, Multi Get, Bulk etc.• Implemented Junit test cases for unit testing, integration testing, functional testing and performance testing and fixed raised bugs.• Built distributed applications in Docker Engine. • Involved in using JPA (Java Persistence API) frameworks and APIs as JDO and Hibernate.• Used Junit and Mockito to create unit test tasks for all features.• Used Microsoft Azure as a cloud platform for deployment.• Worked on SQL for core business logic database storage procedure and used Oracle database.• Involved in spring programmatic transaction management using AOP and using spring batch.

Mumbai, Maharashtra, India

• Involved in various phases of Software Development Life Cycle (SDLC) of the application like Requirement gathering, Design, Analysis and Code development.• Utilized Java 8 features like Lambda expressions and Stream API for Bulk data operations on Collections which would increase the performance of the Application. • Developed application using Spring MVC and AJAX on the presentation layer, the business layer is built using spring and the persistent layer uses Hibernate.• Designed and developed Micro services business components and RESTful service endpoints using Spring Boot.• Implemented Micro-services using Pivotal Cloud Foundry (PCF) platform build upon Spring Boot Services. • Implemented Spring Boot with Micro services to divide the application into various sub modules.• Responsible for creating efficient design and developing User Interaction screens using HTML5, CSS3, JavaScript, and Bootstrap. • Implemented mapStateToProps, mapDispatchToProps for the interactions between REDUX and React.• Implemented a real-time analytics platform using Go, handling millions of data points per minute with minimal latency.• Integrated Go-based services with Apache Kafka for efficient data streaming and processing• Designed and developed Service layer using Struts framework.• Responsible for creating efficient design and developing User Interaction screens using HTML5, CSS3, JavaScript, React, Redux and Bootstrap.• Involved in building applications using, React, JSX, CSS and Node.JS.• Involved in deploying systems on Amazon Web Services (AWS) Infrastructure services EC2, S3, RDS, SQS, and Cloud Formation. • Responsible for developing the sequential and conditional batch jobs using the Spring batch framework.• Developed single page applications using AWS CDk’s, jQuery, JavaScript, NodeJS, HTML & CSS for styling.• Created detailed AWS Security Groups, which behaved as virtual firewalls that controlled the traffic allowed to reach one or more AWS EC2 instance.

Bengaluru, Karnataka, India

• Involved in Requirement gathering, Design, Analysis, and Code development by following agile methodology. • Developed the application using Java 8 and implemented its features like lambdas Expressions, Time API, Streams, functional interfaces, collectors, default methods, type interfaces, for each. • Used Spring Framework for dependency injection for Action classes using Application Context XML file. • Developed Micro Service to provide Restful API utilizing Spring Boot with Spring MVC• Developing Spring Boot based Micro Services using the annotations & implementing architecture patterns, Used Spring Rest/JSON to expose Micro Services APIs.• Implemented persistence layer using Hibernate that uses the POJOs to represent the persistence database tuples. Implemented Hibernate to map all the tables from different data sources to make database updating.• Involved in designing and implementation of MVC design pattern using Struts framework for Web-tier.• Created POC for Spring Batch for running batch jobs.• Designed dynamic client-side JavaScript codes to build web forms and simulate process for a web application, page navigation using React.• Created custom, self-contained, reusable, and testable React modules, controllers, directives, and services to implement key functionalities for customer account summary.• Developed unit test cases using Jasmine to test Angular controllers and services and developed custom validations using Angular.• Developed Message Driven Bean for asynchronous sending Messages using JMS. • Involved in development of presentation tier using spring framework like spring boot and spring batch.• Developing XSLTs in transforming the XML input messages into the appropriate XML outputs required for the application. • Worked on Amazon Web Services (EC2, S3, DynamoDB, RDS, Elastic Load Balancing, SQS, SNS, IAM, Cloud Watch, EBS),