SUMMARY

• Professional IT experience in delivering enterprise solutions in multiple domains like Health, Finance, Enterprise, and other related domains. Expertise in conceptualizing, designing and coding technical solutions using Java/J2EE and UI technology stacks to satisfy complex business problem statements.
• Extensive experience in designing UI web applications using front - end technologies like HTML5, CSS3, JavaScript, XML, DHTML, jQuery, AJAX, JSON, AngularJS, Angular, React, Bootstrap.
• Experience in developing User Interface (UI) Rich Web Applications, and Web Service Applications using Angular modules, services, templates, directives, pipes, services.
• Experienced in React JS and working with React Flux architecture. Experienced in working with Redux architecture.
• Experience in implantation of ci/cd end to end testing pipeline
• Experience in Test driven development (TDD) using unit testing frameworks such as Jasmine Protractor, Karma, JUnit, QUnit and Selenium.
• Designing and Developing Fully Functional Application Backend Services Using Python Flask, JSON for designing RESTful API's, Web Languages HTML, CSS, JavaScript also involved in data mining using HDFS and MapReduce on the Stock Data.
• Expert in Core Java with strong understanding of OOP concepts, Collections, Multithreading, Event handling and Exception handling.
• Hands on Experience in Jboss Drools
• Worked on Lambda Expressions, Functional interfaces Stream API's, Time API, and Improvements on Collection, Concurrency, and IO improvements by usingJava 8
• Experience in Data migration from DB2 to Apache Cassandra DB and involved in major and minor up gradation of Couch base and Cassandra cluster.
• Hands on experience in using Java 8 features like Lambda Expressions, Functional Interface and Stream API.
• Designed and implemented an event-driven microservices architecture using Apache Kafka.
• Strong understanding of Microservice patterns Hystrix, Proxy chaining.
• Hands-on experience in 3 competing and cross-pollinating paradigms of microservices - Spring Boot, JEE(Microprofile) and Nodejs - as well as their Reactive offshoots (Spring 5 WebFlux) and event-driven variants.
• Extensive Knowledge of how Web Semantics translate into REST API’s and Developing REST API’s using Java and Spring.
• Strong experience in Spring Framework modules such as Spring MVC, AOP, JDBC, Spring Boot, Spring Microservices, Spring REST, Spring Ribbon, Spring Netflix.
• Expertise in J2EE Architecture using Java, JDBC, Servlets, JMS, JSP, Hibernate, Maven, Spring, Web services (JAX WS, JAX RS) and Rule Engines (Drools, Easy Rules, Rule Book).
• Experience in Messaging services like (JMS) MQ's Rabbit MQ, IBM MQ, Apache Kafka and Active MQ.
• Deployed the Application into Docker container and made easily accessible at runtime using Pivotal Cloud Foundry and other cloud services like AWS, Netflix Eureka, Spring Hystrix as fallback method, Spring Ribbon for load balancing and a broker service to maintain status using Spring Kafka and Zookeeper.
• Strong Knowledge on different databases like DB2,Cassandra, Oracle, My SQL, NoSQL Database (MongoDB and Cassandra) and writing PL/SQL packages, procedures, Functions, Views, triggers using SQL Plus.
• Good knowledge in employing database caching strategies using MongoDB Elastic search.
• Experience in unit testing the applications using Junit, Mockito, Postman, SOAP UI and developed logging and standard mechanism based on Log4J, Slf4j and good experience in shell scripting.
• Hands on experience with build tools like Maven, Gradle and logging tools like Log4J.
• Experience in using DevOps tools such as Jenkins, Docker for Continuous Integration, integration of SonarQube with Jenkins for static testing & Deployment for Microservices.
• Good knowledge of designing, deploying, and operating highly available, scalable and fault tolerant systems using Amazon Web Services (AWS) and Azure.
• Expertise on advanced software development methodologies such as Agile/Scrum, Waterfall, Test Driven Development (TTD), Incremental and Iteration methodology.

TECHNICAL SKILLS

Programming Languages: Java, J2EE, PL/SQL, Python, C, C++.

JavaScript Frameworks: AngularJS, Node JS, jQuery, React JS

Application/Web Servers: Tomcat7.x/6.x/5.x, WebLogic 10.3/9.2/8.1/7.0, Apache 2.x, WebSphere 6.1/7.0, Apache ActiveMQ 2.9.0, Jboss

Databases: Oracle, MS Access, MySQL, IBM DB2, Mongo DB.

IDE: Sublime text, Notepad++, Brackets, EditPlus, Eclipse, IntelliJ, NetBeans.

Web Development: HTML, DHTML, HTML5, XHTML, CSS, JavaScript, Angular JS, Node JS, AJAX, JSON, Type Script.

Standards & Frameworks: Hibernate, Spring 4.x/2.5/3.1, Spring Batch, JDBC, JSP, JSF, Servlets, DOM, DOJO, RESTful, JUnit, Struts 1&2, Jasmine, Jersey, Postman, Restful web services, Log4j, SLF4J, Spring Boot, Micro Services

Tools: MS Excel, MS PowerPoint, MS Word, MS SharePoint, TOAD, SOAP UI

Build & Design Tools: UML, Rational Rose, Maven, Ant, Jenkins, Gulp, Karma

Version Control: GitHub, SVN, CVS.

Platforms: Windows (98, XP, 7, 8), UNIX, LINUX, centOS

Testing Tools: Selenium, Cucumber, J Unit, Q Unit.

Cloud Services: Microsoft Azure, Amazon cloud services.

Methodologies: Agile, Waterfall, Rup, Xtreme

PROFESSIONAL EXPERIENCE

Java Full Stack Developer

Confidential

Responsibilities:

• Developed dynamic web pages using HTML5, CSS3, Bootstrap and AJAX.
• Developed multiple Angular components which are compatible with latest versions of typescript, angular.
• Developed single page applications (SPA), components using Angular directives, controllers, view and routing, service modules.
• Involved in web application development for backend system using Angular, Angular CLI, Webpack, HTML5, TypeScript, SCSS.
• Experience on Service Oriented Architecture (SOA) and building REST and SOAP web services using Marklogic and Java.
• Experience in Confidential Azure cloud Computing development and support.
• Used java8 features like Lambda expressions and Stream API on Collections to increase performance.
• Application used java8 and used Maven as a build tool.
• Generated Java APIs for retrieval and analysis on No-SQL database such as HBase and Cassandra.
• Used Angular Reactive forms to implement complex forms and performed the validations using Form Builder.
• Defined Angular routes using Router module for components at module level to enable lazy loading for modules and components.
• Managed application deployment using Python.
• Hands on experience in Azure Cloud Services,Storage, Web Apps, Active Directory, Application Insights, and Logic Apps.
• Developed API for using AWS Lamda to manage the servers and run the code in the DB.
• Experienced with Python frameworks likeWebapp2 and, Flask.
• Extensively worked on Java 8 features like lambda expressions for communicating between business layer and database, Stream API for Bulk Data Operations on Collections using both streams and parallel streams.
• Implemented fail safe and circuit breaker patterns in Spring Boot Microservice applications using Hystrix, configured Swagger-UI to registered Microservice with Eureka server and monitored service health check from Spring Boot admin console and Spring Ribbon for load balancing.
• Defined Hibernate Named Queries for Batch related operations while defined Criteria Queries for Micro services.
• Very strong experience writing API's/ and Web Services in PHP and in Python.
• Developed Spring Boot REST API end points implementing messaging queue for a supply chain delivery system
• Worked on building reusable framework for consuming and providing REST API’s using Java, Swagger.
• Developed Merge jobs in Python to extract and load data into MySQL database.
• Worked on Spring Framework for dependency injection, integration of Hibernate using Spring ORM support, development of RESTful web services to give JSON output.
• Created User Controls and simple animations using Java Script and Python.
• Developed and Integrated of REST APIs and services using Fetch API.
• Worked on Spring cloud for Routing, Service-to-service calls, Load balancing.
• Developed Application using Spring MVC Framework by implementing Controller, Service classes. Implemented spring framework Bean Factory and application Context for bean initialization and configurations.
• Used Spring MVC Transaction Management and Hibernate cache concepts.
• Extensively worked on Hibernate concepts such as Lazy loading, Dirty checking, Locking, and Transactions.
• Worked with Hibernate in persistence layer, hibernate mappings using Annotations, HQL, Criteria and Queries.
• Used OAuth authentication protocol respectively for security and authorization.
• Implemented RabbitMQ message queuing for post processing after submission.
• Planned and programmed a work queue system on Angular with RabbitMQ. It uses Express to create a REST API allowing users to create jobs and retrieve data from MongoDB.
• Worked on Unit testing of application and actively participated in debugging using JUnit, Mockito, and built the packages using Maven built tools and deployed the application on Oracle WebLogic Application Server locally, as well as coordinated with the DevOps team to deploy the application onto cloud using AWS.
• Used Postman to test the RESTful API for HTTP requests such as GET, POST, and PUT.
• Developed Unit test cases using JUnit, Mockito and Easy mock.
• Developed unit test cases using Mockito framework for testing accuracy of code and logging is done using SLF4j and Log4j.
• Worked with version control systems like GIT and used Source code management client tools like GitLab.
• Integrated GitLab into Jenkins to automate the code checkout process.
• Worked Hands on with AWS products such as AWS API Gateway, EC2, EBS, AWS Lambda, ECS, EKS.
• Used Amazon Cloud Watch to monitor AWS services and Amazon Cloud Watch logs to monitor application
• Designed REST-full XML Web Service for handling AJAX requests.

Environment: HTML, CSS3, Angular, Java8, JavaScript, Karma, Jasmine, Microservices, REST API, Spring Boot, Spring, Hibernate,AWS Lamda, JWT, RabbitMQ, MongoDB, Drools, Postman, Junit, Mockito, Git, Tomcat, Maven, Jenkins, AWS, JSON, XML.

Java Full Stack Developer

Confidential, Tampa, FL

Responsibilities:

• Worked with Reducers, React Containers to update the state of an App produced by Redux and by mapping those to the React component using React-Redux.
• Created React JS components using JSX, Followed Redux Architecture for unidirectional data flow and manage your data in React and Make HTTP requests in React & Redux.
• Worked on configuring Spring MVC with Angular using Request Mapping.
• Expertise in creating User Controls, Web Forms and client-side validations using JavaScript, jQuery Validate and Angular-JS. Experienced in using Backbone-JS to connect the API's which enforces the communication to the server.
• Used JavaScript for the web page validation and Struts Validator for server-side validation of data.
• Used advanced java 8 features like Lambda expressions for array operations, Streams, Method, collections. Enhanced concurrency methods etc. throughout the application for well-defined programming.
• Worked on testing Web Services using SoapUI tool, request, and response xml.
• Integrated the Drools and JBPM to applicationn frame work which involved dynamic creation of knowledgebase and Knowledge Session.
• Designed and developed Microservices based business components and RESTful service endpoints using Spring boot
• Wrote rules directly in the Drools Rule Language (DRL), and Decision table
• Implemented Spring boot microservices to process the messages into the Kafka cluster setup.
• Developed Micro services using RESTful web services to provide all the CRUD capabilities.
• Developed several REST web services which produces both XML and JSON to perform tasks, leveraged by both web and mobile applications. RESTful web services using Jersey for JAX-RS implementation.
• Working on AWS Lambda for event driven work flow.Working on Databases, Creating and Hosting micro services on EC2 istances, automating things using JSON Scripts, Creating End-Points for the services, Integrating through API’S Involved in creation of APIs and API Gateways for by establishing Secure connection between the end-points.
• Integrated with the back-end Restful API calls to make the application more dynamic and responsive with the best user experience and Rest Services backend and Drools and BRMS, Junit and integration/functional testing.
• Exposed and consumed SOAP based Web Services to communicate between systems.
• Configured Swagger for auto-generated documentation for all REST API calls.
• Developed and deployed Java REST web services using Spring Framework.
• Worked with SOAP UI, JAX-WS to create Web Services and consuming the existing services.
• Developed batch processing using Spring Batch in the persistence layer & improved performance of batch processes using Multithreading with Executor Framework for control of asynchronous tasks in parallel threads.
• Developed micro services architecture using Rest APIs, spring boot and pivotal cloud foundry.
• Worked on Hibernate as an Object Relational Mapping (ORM) Tool for the backend data persistence.
• Developed and maintained the data layer using Hibernate and used Spring ORM to integrate with Hibernate.
• Developed the Hibernate mapping files and involved in writing JUnit test cases and suits using Eclipse IDE.
• Implemented Spring boot microservices to process the messages into the Kafka cluster setup.
• Developed data transformer for converting legacy data from Source tables to Avro format and fed into Kafka using Camel.
• Worked on Single node/Multi-cluster setup using technology NoSQL and MongoDB.
• Involved in DAPP development using HTML, Java Script and Node.js to interact with Web3 JS API
• Extensively used JUnit, JMeter, SoapUI for testing.
• Conducted a testing of various unit layers using JUnit with Easy Mock and created automated test scripts for integration testing using Selenium and configured unit test cases using Junit
• Experience in using Maven, Gradle, Ant builds and in Visualization tools like Tableau.
• GitHub has been used as a Version Controlling System.
• Deployed, Scaled, Configured, wrote manifest file for various Microservices in PCF.
• Experience in Micro services development using spring boot and deployment in Pivotal Cloud Foundry (PCF).

Environment: HTTP, CSS3, Angular, JavaScript, SOAP, Spring MVC, Hibernate, JMS, DB2, Oracle, Git, WebLogic, PCF, AWS,PYTHON.

Java Developer

Confidential, Frisco, Texas

Responsibilities:

• Involved in creating dynamic web site design and programming using HTML5, CSS3, JavaScript and jQuery.
• Built Web pages that are rich user-interface using AJAX, JavaScript and AngularJS.
• Created custom Plugins, templates, and functions for Angular JS application.
• Developed Angular services making use of resource service to perform REST API calls to the backend.
• Involved in developing HTML and JavaScript for client-side presentation and, data validation within the forms.
• Used Hibernate framework for back-end development and Spring DI for middle layer development.
• Implemented Spring MVC (Model View Controller) to handle/intercept the user requests.
• Used JMS for asynchronous exchange of message by applications on different platforms.
• Uses the DAO pattern for data access layer and JMS API for the messaging requirement.
• Built Application logic using Python.
• Configured the Web sphere application server to connect with DB2, Oracle and SQL Server in the back end by creating JDBC data source and configured MQ Series with IBM RAD and WAS to create new connection factories and queues.
• Created new RESTful web service operations, modified the existing web service, and used SOAP UI tool to test the RESTful web service operation.
• Monitoring and managing the WebLogic server instance using WSLT and for the automation purpose.
• Extensively used Git for version controlling and regularly pushed the code to GitHub.
• Involved in the configuration of Spring, Pivotal cloud foundry (PCF), Micro Services Framework and Hibernate mapping.

Environment: HTML, CSS3, Angular, Java8, JavaScript, Microservices, REST API, Spring Boot, Spring, Hibernate, JWT, RabbitMQ,PYTHON, Oracle, Postman, Junit, Mockito, Git, Tomcat, Maven, Jenkins, AWS, JSON, XML.

Java Developer

Confidential, Columbus, OH

Responsibilities:

• Involved in complete software development life cycle including design, development, testing, monitoring logs, debugs and trouble shoot and fix the problems in various environments in AGILE Methodology.
• Server-side programming is done using java servlets, and EJB.
• Translated the entire business model of the Mutual Funds Operations into Object Oriented models.
• Converted XML data into HTML specification to be displayed in the webpage.
• Coded Java Beans with Eclipse IDE and implemented the logic for navigation between JSP pages using MVC design patterns.
• Implemented Struts framework (Action & Controller classes) for dispatching request to appropriate classes.
• Used simple Struts Validation for validation of user input as per the business logic and initial data loading.
• Used Spring Beans to encapsulate business logic and Implemented Application MVC Architecture using Spring MVC framework.
• Designed & developed various business services and methods utilized by online web applications for fulfilling their functionalities using Spring.
• Developed Controller's and Validator components using Spring MVC framework.
• Used REST methodology using HTTP Handlers in developing Web Service replication interface for setting up data feeds for content transportation in XML and JSON formats.
• Developed the code through different Layers presentations layer using Struts, Business Layer using Spring IOC, Service Layer using Hibernate ORM framework.
• HQL queries were developed to retrieve data using Hibernate.
• Developed Controller Servlets, Action and Action Form objects for process of interacting with MySQL database using Struts.
• Develop back-end business/application logic through Session EJBs.
• Developed Database Procedures for updating, Inserting, and deleting table for a complete logical Unit of Work (LUW) using PL/SQL.
• Involved in system testing and integration testing, and trouble shoot issues in multiple environments.
• Deployment and developing Enterprise Java Beans with WebLogic Application server in the UNIX Environment.
• Involved in JUnit testing for various components of applications like Service layer and DAO layer.
• Used Putty and WinSCP tools to check the log files on Unix server in case of debugging an issue
• Prepared complete documentation for developed portion of the system.
• Used Rational Clear Case as version control system.
• Used SVN for version control and LOG4J for debugging.

Environment: Java, J2EE, EJB, HTML, CSS, AJAX, JQuery, Angular JS, XML, JSON, JSP, Servlets, EJB, Struts, Hibernate, Spring, PL/SQL, JDBC, WebLogic, My Eclipse, MAVEN, JUnit, Notepad++, SVN, Pivotal Tracker.

Java Full Stack Developer

Confidential

Responsibilities:

• Developed UI pages using HTML5, AngularJS, Bootstrap, CSS3, JavaScript, jQuery, AJAX and Nodes.
• Used React JS for templating for faster compilation and developing reusable components.
• Develop various screens for the front end using React JS and used various predefined components from NPM (Node Package Manager) and redux library.
• Used ReactJS to implement rich functions in various pages: form validation, grid list, search, sort, pagination, multi-selection, tags-input, advanced/custom directives, authentication, unit tests, etc.
• Used ReactJS to create views to hook up models to the DOM and synchronize data with server as a Single Page Application (SPA).
• Integrated Redux framework to scale and maintain the application better while handling large amounts of data.
• Worked on security updates and issues found with Vue.js and all project dependencies.
• Developed forms for user event handling and validations using JavaScript and AJAX.
• Integrated testing methods implemented by using Karma and Jasmine.
• Implementing or exposing the Micro service architecture with Spring Boot based services interacting through a combination of REST and Apache Kafka message brokers.
• Spring cloud is implemented along with the microservices architecture.
• Worked on Spring Ribbon for load balancing and used fail safe methodology using Circuit Breaker pattern with Hystrix/Dashboard on designing and implementing Microservice applications.
• Improved data retrieval by implementing RESTful API and interfacing with corresponding OLTP and OLAP.
• Worked on RESTful web services, exclusively consuming REST API with Asynchronous behaviour.
• Designed and Developed Custom Connector Software in Java to fetch data from third-party security applications using RESTful webservices, storing in Kafka Message Queues and performing analytics for streaming data in real time using Apache Spark.
• Developed Rest API’s to processes the data from Database to another Rest Service and created containers for the API’s using Docker.
• Used Annotations for Spring DI, Auto wiring and Spring MVC for REST API s and Spring Boot for Micro services.
• Implemented pre-authentication and data base security using Spring Security and securing application access and Spring Batch for scheduling and maintenance of batch jobs.
• Developed the applications using Spring framework including Spring Core, Spring MVC, and Spring Integrations design pattern.
• Created Micro services using spring boot, spring security and deployed to AWS cloud.
• Worked on creation of custom Docker container images, tagging, pushing images, integration of spring boot.
• Worked on the OAuth for accessing the cloud storages like Box, one drive, Google Drive, Drop box.
• Implemented Kafka producer and consumer applications on Kafka cluster setup with help of Zookeeper.
• Implemented MongoDB as data storage and utilized aspects like replica sets, sharding and clever document design to make service extensible scale and feature wise.
• Using Swagger UI registered micro services, monitored service health check from Spring Boot admin console.
• Auto generated documentation for Rest API calls using Swagger.

Environment: HTML, CSS, React, Java, JavaScript, Karma, Jasmine, Microservices, REST API, Spring Boot, Spring, JWT, Kafka, MongoDB, Swagger, Junit, Mockito, Maven, Git, Jenkins, Docker, AWS, JSON, XML.