PROFESSIONAL SUMMARY:

• Overall 8+ years of experience in development and implementation of large - scale, Object-Oriented, high-performance Web-based Client-Server applications by using Java , J2EE Technologies.
• Hands-on experience in building Rich UI and RWD Applications using Angular JS, React JS, Backbone JS, Node JS, Java Script, HTML5, CSS, Boot Strap, JSP, JSTL, JSON, AJAX, JQuery.
• Expertise in application development using JSP, Servlets, JDBC, JNDI, Spring, Hibernate, Ibatis, Mybatis, JSF, EJB, XML, Web Services, Micro-Services, WSDL.
• Expertise in XML and related technologies like XSL, XSLT, XPATH and parsers like JAXP (SAX, DOM) and JAXB .
• Expertise in implementing Web Services , Micro-Services , AWS, Docker and JMS for the synchronous and asynchronous communications between two applications running in different servers.
• Expertise in designing and developing enterprise applications using J2EE technologies like Struts 1.2/2.0, Spring 3.x/4.x/Boot, JDBC, JNDI, JMS, JAXB, SAX/DOM, Web services, Apache Kafka .
• Extensive work experience on Spring Framework modules ( Spring Core, Spring Web, Spring JDBC, Spring Rest Services, Spring Data Access/Integration, Spring Batch, Spring AOP, Spring Transaction and Spring Security ).
• Expertise in designing several Entity classes with relational database, involved in designing generic DAOs for the domain model to increase the reusability of methods by using of Hibernate with JPA annotation .
• Proficient in design patterns such as MVC (Model-View-Controller), Singleton, DAO, DTO, Composite View, Business Delegate, Controller Factory, Abstract Factory, Service Locator, Observer, Iterator, Session Facade, Decorator, Adapter and View Helper Pattern .
• Well experienced in developing Database components like Stored Procedures, Triggers, PL/SQL packages and Cursors for Oracle, SQL Server and DB2 databases.
• Extensive experience with NoSql Databases like MongoDB, Cassandra and Couchbase.
• Developed Micro-Services using Spring Boot and Spring Cloud Netflix Eureka, Ribbon, FeignClient .
• Strong understanding of Micro-Service patterns - Hystrix, Aggregator, Proxy chaining .
• Hands on Experience in AWS Services like EC2, S3, Elastic Beanstalk, ELB (Load Balancers), RDS, VPC, Route53, Cloud Watch, Cloud Formation, IAM, SNS.
• Experience on creating Docker container images , pushing images, integration of Spring Boot .
• Hands on experience in working with Kubernetes for managing related, distributed cluster components.
• Experience in working with messaging systems like Kafka , Kafka event Sourcing.
• Developed multiple POCs using Scala and deployed on the Yarn , performance of Spark, Cassandra .
• Experience in developing the applications using Python and Ruby programming.
• Experience with Enterprise Service Bus such as MuleSoft ESB.
• Developed API's and REST API proxy using APIGEE Edge for sending mobile notifications, implemented payment gateway on APIGEE Edge API Management Platform.
• Proficiency in deploying J2EE Applications archives (JAR, WAR and EAR) on IBM Web Sphere Application server , Apache Tomcat Web Server and BEA Web Logic Application Server .
• Expertise in using Maven, Apache Camel, ANT and Jenkins for automating software builds processes and artifacts.
• Solid understanding of source controllers like GIT, CVS and SVN.
• Co-ordinated with team for analysis and requirement gathering in methodologies- Agile(Scrum), TDD , XP, Waterfall.
• Experienced in Development, testing and deployment of enterprise applications on Windows & UNIX platforms using IDE's such as Eclipse, Rational Application Developer (RAD), Netbeans, intellij 14.x/15.x.
• Expertise in Selenium automation using Selenium WebDriver, Selenium Grid, JAVA, JUnit.

TECHNICAL SKILLS:

Programming Languages: JAVA, JDK 1.5,1.6, 1.7, 1.8, C, C++, SQL, PL/SQL

Platforms: Windows 2003, 2008 Server, Linux, Unix

Java Core: Threads, Exception Handling, Lambda Expressions, Stream API, Collections, Functional Interfaces and Date API

Build Tools: Apache, ANT, Gradle &Maven

IDE& Reporting Tools: Eclipse, NetBeans, IntelliJ, JBuilder 2005, 2006

Java Message Service: MQ, IBM MQ, Active MQ, Rabbit MQ

J2EE MVC Frameworks: SPRING 3.0, 4.0, Struts 1.1

Databases: Oracle, MY SQL, DB2, MongoDB, Mark Logic and Cassandra

Database Tools: SQL Developer for Oracle, Connect/J for MySQL, IBM DB2

Application Servers: Web Logic, WebSphere, Jboss and Apache Tomcat

Web Technologies: HTML, HTML5, DHTML, CSS, Java Script, XML, SOAP, XSL, XSLT, XHTML, JavaScript, JSON, AJAX.

ORM Frameworks: Hibernate 3.0, JPA

JavaScript libraries: jQuery, Angular JS, Backbone JS, React JS, Node JS Ext JS, Bootstrap.

Version Control: GIT, SVN, CVS and Team Foundation Server

Middleware Technologies: EJB, JNDI, JMS (Java Message Service) and SOA

Web Services: JAX-RS, JAX-WS and JAX-RPC

Design Methodologies: Rational Unified Process, Agile, Scrum, Test Driven Development

Continuous Integration: Jenkins, Quick Build, Bamboo

Testing: Junit, Selenium, QC, TEST NG, Mockito

Logging Tools: Log4j, slf4j, splunk

PROFESSIONAL EXPERIENCE:

Confidential, Minden, NV

Sr. Java/J2EE Full Stack Developer

Responsibilities:

• Involved in Requirements gathering, analysis, design, development, testing and Maintenance phases with Agile
• Developed design documents with Sequence Diagrams, Class Diagrams using Microsoft VISIO tool.
• Designed and developed the UI using Angular JS, Node JS, HTML5, CSS3, JavaScript, AJAX, and JSON.
• Used Bootstrap for responsive design which allows users to access it from any device.
• The presentation layer used Spring MVC to implement the MVC architecture design and facilitates user interface designed by use of Angular components, directives, filters, services and router modules.
• Used ReactJS to create views to the DOM and synchronize data with server as a Single Page Application (SPA).
• Built Web pages using jQuery plugins for Drag and Drop, JQ-Validator, AutoComplete, AJAX, JSON, Angular JS.
• Working with Java 8 features like Lambda Expressions, Filters, Stream API, forEach() method in Iterable interface, new Date API, Predicates and Functional Interfaces.
• Implemented Spring and J2EE based MVC (Model-View-Controller) framework for the application.
• Implemented Micro-Services with Spring Cloud provided library services like Netflix Eureka Naming Server, Netflix Ribbon and Feign Client as a Rest client to map response to the client bean.
• All the functionality is implemented by using Spring IO, Spring Boot and Implemented J2EE components using Spring MVC, Spring IOC, Spring transactions, AOP, Batch and Spring security modules.
• Designed several persistent classes and involved in designing and creating generic DAOs for the domain model by using of Hibernate 4.x with JPA annotation.
• Used Spring Boot with ORM Framework (Hibernate) to do CRUD operations with Database.
• Implemented Apache CXF to create SOAP based Restful web services. And created WSDLs as per wire frames, UI pages generated client jars using JAX-WS.
• Deployed Spring Boot based Micro-Services in Docker container by using AWS admin console.
• Maintained and expanded AWS (Cloud Services) infrastructure using AWS Stack, defined AWS Security Groups which acted as virtual firewalls that controlled the traffic allowed reaching one or more AWS EC2 instances .
• Creating alarms and notifications for EC2 instances using Cloud Watch .
• Installed the application on AWS EC2 instances and configured the storage on S3 buckets .
• Configured AWS Identity and Access Management (IAM) Groups and Users for improved login authentication, auto scaling the instances to design cost effective, fault tolerant and highly reliable systems.
• Installed Kafka on the cluster and configure producer and consumer coding part in java to establish a connection from source to HDFS with popular hash tags.
• Built real time pipeline for streaming data using Kafka and SparkStreaming .
• Developed integration modules for disparate clients using Apache Camel .
• Involved in building and deploying scripts using Maven3.3 to generate WAR, EAR and JAR files.
• Developed Applications using Rule Engines, Drools 4.xand ILOG with correspond to validate the business User Roles.
• Used GIT for version control and source repository, Used Fisheye for Code Review and JIRA for reporting Bugs.
• Involved in writing Thread Safe blocks for multithread using Executor Service Framework access
• Created continuous integration builds using Ant, Jenkins, Gradle and deployed on WebSphere app server.
• Done with Web sphere server configurations, Data Sources, Connection Pooling, MQ Series Queues set up for messaging and deploying the apps on different servers in different environments like QA/IST/Production.
• Used Soap UI for web service testing, Used Log4j framework to log/track application.
• Written SQL queries, PL SQL stored procedures, functions, triggers, cursors, sequences, and indexes which are going to be invoked by Batch processes.
• Managed and maintained Oracle and NoSQL (MongoDB) databases in production domain
• Participated in migration to DB2 data base from Oracle DB.
• Experience with JUnit tests for every single piece of functionality before actually writing the functionality.
• Done with Unit testing using MOKITO.

Environment: Java, J2EE, JDK 1.7/1.8, Spring 4.x, Hibernate 4.x, Restful Web Services, Micro-Services, HTML 5, CSS 3, Bootstrap, Angular 2, JSON, React JS, Ajax, Maven 3.0, WAS, AWS EC2, Amazon Elastic Beanstalk, AWS IAM, S3, Docker, Soap UI, Jenkins, Git, Junit 4.4, Log4j, Apache Kafka, Camel, MongoDB, Oracle 11g, Agile Scrum.

Confidential, Des Moines, IA

Sr. Java/J2EE Full Stack Developer

Responsibilities:

• Involved in various SDLC phases like requirement gathering, Design, Analysis and Code development.
• Used React JS for creating loop directive and components to render views and to update object model dynamically.
• Used Bootstrap and React JS to create Controllers to handle events triggered by clients and send request to server.
• Analyzed the React JS server structure in legacy project, then mimicked the REST service by using Java JAX-WS API, and did the corresponding configurations.
• Developed the application using Spring Framework Model View Controller (MVC) architecture.
• Implemented Spring Security for Authorizations like Method Level and URL Level Authorization using Spring AOP.
• Implemented Spring Transaction for the degree of isolation to work with other transactions and to execute within a transaction scope and check out before timing out of the transaction
• Used Web services (SOAP, REST) for transmission of large blocks of data over HTTP.
• Created continuous integration builds using Ant Jenkins. And deployed on WebSphere app server.
• Used XML Web Services using SOAP protocol to transfer the amount to other application remotely.
• Developed application using design patterns like Session Façade, Business Delegate, Bean Factory and Singleton.
• Wrote code Web Services (JAX-WS) for external system via SOAP/HTTP call and to fetch data from web services via JSON response and updating the HTML pages.
• Experience in Message Oriented Middleware implementation using JMS and Apache Kafka.
• Worked on SOA Web Services using SOAP with JAX-WS for transmission of large blocks of XML data over HTTP, Used JAX-B parser for marshaling and un-marshaling.
• Developed Spring based presentation layer, Hibernate based DAO layer and integrated them using Spring Dependency injection, ORM and Web modules.
• Configured the Hibernate configuration files to persist the data to the Oracle 10g Database.
• Created connections to database using Hibernate Session Factory, using Hibernate APIs to retrieve and store images to the database with Hibernate transaction control.
• Implemented persistence layer using various features of Hibernate framework like HQL queries, Criteria etc.
• Used Docker for possible to production to the development environment to fast possible for interactive use.
• For fixing an application, Docker is used to provide many tools that are not necessarily specific to containers, to provide extremely useful functionality and to include the ability to checkpoint containers and container versions.
• Used AWS to deploy the project on an EC2 instance. Created highly fault tolerant, highly scalable Java application using AWS Elastic Load Balancing , EC2, VPC and S3 as part of process and security improvements.
• Using Kafka for Publish/Subscribe pattern in application dealing with messaging.
• Multithreading was used to process data in chunks to improve performance.
• Followed the best practices in coding like removing unnecessary casting, using generics in Hash Map, caching, Collections like sort, comparator, list, set and Design patterns.
• Worked with Web Sphere Application Server as application server.
• Used version control repository SVN (Subversion by apache) and JIRA for issue tracking.
• Used Maven as a build tool and retrieved all the dependencies required for the application. .
• Designed and implemented Java Classes to use JAXP parser to create Java objects so as to be able to modify the data received in the response.

Environment: HTML, CSS, Bootstrap, AJAX, JavaScript, JSF 2.1, Angular JS, React JS, Spring Dependency Injection, Spring 3.x, Hibernate 3.x, Soap UI, AWS, Kafka, Docker, I Text, Maven, SVN, JIRA, Marionette.js, MongoDB, XML, Web sphere, SOAP web service, Unix/Linux, Web Sphere Application Server, PL/SQL, Oracle 10g.

Confidential, Durham, NC

Sr. Java/J2EE Developer

Responsibilities:

• Worked on the development and testing of the infotainment module using Agile (SCRUM) methodologies.
• Used Angular JS as framework to create a Single Page Application (SPA ) which can bind data to specific views and synchronize data with server.
• Refactored and enhanced an existing Angular JS application to follow strict MVC patterns for improved source code maintenance which resulted in significant percentage of code reduction, ease of upgrade, scalability, ease of developer spin up and enhanced performance.
• Used Angular JS, Node JS and Bootstrap in effective web design.
• Involved in enhancement of existing application utilizing Angular JS created role based HTML navigation menu where in menu items changes dynamically based on the values derived from the database in the form of XML.
• Worked on Node JS providing an event-driven architecture and a non-blocking I/O API that optimizes an application's throughput and scalability.
• Implemented client side Interface using Node JS and Used for creating reusable UI components.
• Created and injected Spring services, Spring controllers and DAOs to business classes using Autowired annotation.
• Implemented Spring Batch to design a lightweight and comprehensive solution to enable for batch applications.
• Developed and implemented Business Requirements using Spring MVC framework. Implemented cross-cutting concerns such as logging, authentication and system performance using Spring AOP.
• Created the User Interface screens using Spring MVC for logging into the system and performing various operations on network elements.
• Implemented Micro-Services using Spring Boot, Spring Cloud Netflix (Config Server, Eureka Server, Hystirx, Discovery Client, Ribbon, Zull Proxy).
• Used Spring framework to achieve loose coupling between the layers thus moving towards Service Oriented Architecture (SOA) exposed through Restful Services.
• Implemented RESTful Web services in Service Oriented Architecture ( SOA ) to retrieve data from service and made REST API calls from Angular JS and parsed the data to client and handled the security using Spring Security .
• Worked on AWS, High Availability Practices and deploying backup/restore infrastructure.
• Utilized Splunk for aggregating various logs from different systems.
• Experience in implementing custom monitoring system through Splunk into deployment processes.
• Developed Hibernate DAO classes and with the Spring ORM to perform persistence operations on the database.
• Used Hibernate Detached Criteria, HQL and written some SQL queries for data retrieving.
• Apache Kafka is used to send message objects to client queues and topics.
• Analyzed the Node.JS server structure in legacy project, then mimicked the REST service by using java JAX-WS API, and did the corresponding configurations.
• Hibernate annotations are included for Oracle DB.
• Developed strategies and tools to create an efficient automated integration and release process using Jenkins.
• Analyze and resolve conflicts related to merging of source code for GIT .
• Log4j is used for logging purposes and debug levels are defined for controlling what we log.
• Expertise on Selenium Data Driven framework and integrating it with Maven Build Management Tool, TestNG Unit Testing tool and Jenkins Continuous Integration Tool .
• Working with on-site and off-site resources for successful implementation of the Workflow module.

Environment: Xml, Xsl, Angular Js 1.5, Node Js, React Js, Boot Strap, Html 5, Javascript, Css 3, Ajax, Spring 3.x, Hibernate 3.x, Git, Aws, Jenkins, Websphere 5.0, Web Services, Jms, Soapui, Test Ng, Json, Ant, Log 4j, Oracle DB, Spring Cloud Netflix, Config Server, Eureka Server, Hystirx, Discovery Client, Ribbon, Zull Proxy, TestNG, Agile.

Confidential, Indianapolis, Indiana

Java Developer

Responsibilities:

• Involved in complete software development life cycle with object oriented approach of clients business process and continuous client feedback.
• Engaged in developing the UI by using HTML, JSF, JQuery, and JavaScript and in some places used AJAX to make calls to other services.
• Involved in developing the CSS sheets for the UI Components.
• Developed web based application using Spring framework for MVC architecture.
• Setting up the basic project set-up from scratch of Spring-Hibernate App based on Design.
• Used Spring Framework AOP Module to implement logging in the application to know the application status. Used Spring DAO Module along with Struts Framework to deal with Database.
• Spring MVC Framework IOC (Inversion of Control) design pattern is used to have relationships between application components. It is also used to separate the application configuration and dependency specification.
• Used Apache CXF to post messages to external vendor sites and exposed Web Services to other client applications.
• Developed the Servlets for processing the data on the server.
• Used SVN for version control.
• Involved in development of REST Web Services using Spring MVC to extract client related data from databases and SOAPUI tool is used for testing RESTFUL API web services.
• Wrote corresponding one-one REST methods to implement respective change requests (change appliers)
• Created SOAP based web service using JAX-WS and tested service using SOAP UI.
• Implemented the Web Service client for the login authentication, credit reports and applicant information using JAX-WS 2.0 and Apache Axis 2.
• Tested REST services using google chrome’s POSTMAN plugin.
• Deployed the application in JBoss Application Server.
• Worked on Junit for creating test cases for all the Business Rules and the application code.
• Called external vendor applications using Web Services for delivering notifications.

Environment: HTML, JSF, JQuery, JavaScript, Apache Cfx, Servlets, Jboss, Spring 3.x, Hibernate 3.x, Spring mvc, Svn, Soa, Resful, Jax-Rs, Jersey, Soapui, Jax-Ws, Apache Axis 2, JBoss Junit, Webservices, Jibx, Postman, Svn, Junit, Agile.

Confidential, NJ

Java/J2EE Developer

Responsibilities:

• Collected requirements from Agents for documenting the requirements of Accounting module, claims module.
• Implemented interceptors using Hibernate and build and release Spring framework.
• Responsible developing Persistence classes using Spring JDBC Template frameworks to save data in database tables.
• Involved in development of User Interface using XSLT, HTML, JavaScript, DOJO and JSTL.
• Performed JavaScript Validations on the data submitted by the user.
• Used JSON to transfer the request from the web page to the server.
• Provided data persistence by object/relational mapping solution via Hibernate for application.
• Worked on JPA for persisting the objects into the system.
• Created services for various modules like Account Creation and Maintenance using Spring.
• Lead the design of the new, single-page, Ajax-driven, HTML application.
• Used apache-Maven tool to build, configure, and package and deploy an application project.
• Worked on Axis implementation and used SOAP UI to test the SOAP.
• Worked on XML, XSD and XSLT to parse the request and create the new one based on the specification.
• Used ANT tool to build and deploy applications.
• Generated the required XML files to transfer data between the server and the web pages.
• Used Concurrent Versioning System (CVS) as a version controlling for the source code check in and check outs.
• Used DOM parser for validating the XML files against their respective XML schemas.
• XPATH expressions are used to extract data from the XML files.

Environment: XSLT, AJAX, HTML, JavaScript, CSS, DOJO, Spring, Hibernate, JBoss, JUnit, DB2, DB Visualizer, Eclipse IDE, CVS, XPath, XSLT, JAX-RPC, Web Services, XMLSchema, DOM parser, fiddler.

Confidential

Java/J2EE Developer

Responsibilities:

• Involved in preparing the detailed design document for the project.
• Creating class diagrams, sequence diagrams, Data Model and Object Model using Rational Software Architect.
• Implemented the architecture of the modules according to the J2EE standards.
• Developed three tier architecture using MVC design patterns of Spring MVC, Spring IOC, Spring Web modules.
• Developed User Interface using JSP, JSF, HTML, JavaScript, and CSS, developed various Action and bean classes.
• Involved in the configuration of Spring and Hibernate and used generic DAO design to build Hibernate DAO classes.
• Used Object/Relational mapping tool Hibernate to achieve object persistency.
• Written Delegate services provided web services SOAP, XPATH, XSLT, DTD to the end clients
• Involved in configuring Hibernate to access database and retrieve data from the database for the modules.
• Implemented logger for debugging and testing purposes using Log4j.
• Developed stored procedures and triggers with PL/SQL stored procedures using TOAD.
• Developed ANT Scripts to do compilation, packaging and deployment in Web logic application server.
• Involved in configuration of Eclipse, TOAD and Web Logic Application server.

Environment: Eclipse, Weblogic server, JNDI, Spring IOC, Spring MVC, JPA, Hibernate, Unit Test (JUNIT), XML, JSTL, Spring Tag Libraries, JSP, Servlets, JDBC, JMS, MySQL, Rest web services, JQuery, Log4J, Maven, Java script, HTML.