Candidates About

Vikas K

 

 

 PROFESSIONAL EXPERIENCE:

·   Over 8 years of professional full stack development in IT industry with exposure to all the stages in Software Development Life Cycle (SLDC) including gathering requirements, analysis of requirements, software design, development, testing and maintenance of web applications using JAVA/J2EE technologies.

·         Expertise in Designing and Developing User Interface using HTML5, CSS3, Bootstrap, JQuery, ECMASscript6(ES6), ECMAScript5(ES5), Javascript, Typescript.

·         Well understanding the features of ES6 like arrows, promises, modules, block scoping, enhances object literals to build highly interactive pages.

·         Expertise in implementing MVC architecture on client side using Angular JS, React with redux, React with flux, Backbone JS, Ext JS, knockout JS.

·         Developed view rendering pages using React.js.

·         Experience in implementing MVVM architecture on client side using Angular 2, Angular 4 , Angular 5 with typescript 2.7.

·         In Angular implemented various concepts like components, directives, Data Binding, Event Binding, written services for dependency injection, Observables, Shadow DOM.

·         Implemented angular observables and listeners (RxJS libraries) to simplify making asynchronous calls to backend REST API’s.

·         Experience in using Angular 4 router to build single page application (SPA) to navigate through the different components.

·         Experience in developing server-side JavaScript frameworks using NodeJS along with Express JS to build event driven, non-blocking i/o model web applications.

·         Experience in developing and publishing RESTful web services using Node Js Asynchronous programming and express JS.

·         Experience in developing Restful API’S with Hapi.js and followed Event driven approach with Node.js.

·         Expertise in working with Hapi.JS to build reusable application logic by avoiding spending time on building infrastructure.

·         Developed applications using node JS Socket.io programming for persistence connection from client to the server.

·         Experience in developing applications with Angular 2, Node Js, Express Js and Mongo DB to keep application synchronized with the database.

·         Expertise in using of Java Script build tools and task runners like Webpack for React, Grunt, Gulp for Angular 2.0/4.0, Browserify for packaging Node JS modules for browsers.

·         Good amount of working experience with web application’s UI testing frameworks such as Karma, Jasmine, Protractor for Angular JS, Mocha and Chai for React JS and Backbone JS.

·         Worked extensively with JAVA 8 features like Stream API, Time API, Functional Interfaces Multithreading, Transaction Management, Exception Handling, Collection API.

·         Extensively worked on Microservices for creating API’s services with Spring Boot to modularize code.

·         Experience in developing and deploying Micro Services based on Spring boot and Spring Cloud.

·         Expertise in using Spring Boot to create stand-alone applications and for building web service.

·         Good understanding of Spring annotations as well as XML configuration for dependency injection.

·         Experience in implementing Swagger for dynamic API documentation.

·         Expert in integrating JMS (Java Message Service) with SPRING BOOT by providing an instance which is embed with Active MQ.

·         Experience in implementing Service Oriented Architecture (SOA) with web services like Simple Object Access Protocol (SOAP) and service based technology like Representational State Transfer (REST).

·         Extensively worked on SOAP protocol using JAX WS and Apache CXF and documented services using WSDL.

·         Developed projects with RESTful services (JAX-RS, Apache CXF) and REST resources that include components like Jersey and used WADL for documenting REST API’S.

·         Extensively worked on servlets, JSP, Structs, JSF, Spring MVC, Spring IOC, Spring AOP, Spring JDBC, Spring Data, Spring I/O, Spring REST, Spring JTA, Spring security, Spring batch to implement Monolithic Architecture.

·         Experience in Deploying and Configuring Application servers and Web Servers such as Oracle WebLogic, IBM WebSphere, JBoss, Glassfish and Apache Tomcat.

·         Good knowledge in Object Relational Mapping (ORM) framework which includes Hibernate, Spring JPA, Apache iBATIS, Spring Data, Spring JDBC.

·         Experience in using with Hibernate’s second level cache by Ehcache.

·         Experience in Relational Database Management System (RDBMS) databases like Oracle 10g/11g/12g, MySQL5.x, DB2, PostgreSQL.

·         Experience in NoSQL database like MongoDB, Apache Cassandra, Apache CouchDB, Graph database.

·         Proficient in writing stored procedures, functions and triggers using. PL/SQL in JDBC, ODBC in WebLogic server.

·         Experience using Object Document Mapper (ODM) frameworks to connect asynchronous environment with Mongoose Connector and Cassandra Node Driver.

·         Expert command on implementing Spring Cloud- Netflix OSS Stack, Zuul (API Gateway), OAuth 2.0. (authentication framework), Hystrix (Circuit Breaker) and Eureka for service registration

·         Expertise in applying JMS (Java Messaging Service) for reliable information exchange across Java applications using Apache Kafka, RabbitMQ, ActiveMQ and IBM MQ to communicate from Client to server.

·         Experience in using Apache Kafka (Message Queues) for reliable and asynchronous exchange of vital information between multiple business applications

·         Good knowledge in using Apache Kafka in cluster as messaging system between the APIs and micro services.

·         Experience in maintaining log delivery system by creating producer, consumer and broker architecture using Apache Kafka.

·         Experience in building real-time dashboard applications for visualizing, analyzing and exploring data on Apache Web servers using Elastic Search, Logstash and Kibana 4.0 (ELK), Splunk.

·         Experience in using various AWS (Amazon Web Services) IaaS (Infrastructure as a Service), PaaS (Platform as a Service) Components like EC2 for running applications on virtual machines, Lambda for serverless program functions, S3 for storage, Amazon DynamoDB which provides seamless scalability and fast performance, Amazon Elastic Load Balancing for distributing traffic on the network.

·         Expertise in using Microsoft Azure which is cloud computing service for building, testing, deploying and managing applications and services through a global network of Microsoft-managed data centers.

·         Expertise in Pivotal Cloud Foundry (PCF) which is an open source cloud platform as a service (PaaS) on which developers can build, deploy, run and scale applications.

·         Used Docker Container to address every application across the Hybrid Cloud and Docker for better collaboration and innovation.

·         Hands on experience in managing this Docker Container using Kubernetes with zero downtime deployment.

·         Experience in Oauth 2.0 providing security for authorizing the users, single sign on for authenticating, JWT for producing tokens.

·         Implemented Docker container service, build pipe line like Jenkins, Bamboo and GoCD for Continuous Integration and Continuous Deployment that can run on the cloud or on-premises.

·         Experience in automation tools like MAVEN, ANT, Gradle for project builds, documentation and dependency.

·         Strong Experience in working with JAVA based testing frameworks like JUint, Selenium, TestNG, Mockito, Spock, Cucumber, Powermock, MockMvc, etc.

·         Experience in Web Application testing using Selenium, Cucumber (Body Driven Development).

·         Experience in working with various version controlling tools like Git, SVN, Bitbuckets and different Project management tools like JIRA, Rally, Microsoft Project.

·         Experience in using Drools which is Business Rule Management System (BRMS) for defining business rules and Validations.

·         Experience in using Mule soft which is light weight Java based Enterprise Service Bus (ESB) which allows connecting applications together quickly and easily, enabling them to exchange data.

·         Experience in using open source framework Apache Camel which for message-oriented middleware with a rule-based routing and mediation engine that provides a Java object-based implementation of the Enterprise Integration Patterns (EIP) using an application programming interface to configure routing and mediation rules.

 

technical skills

 

Programming Languages	C, C++, Java, PL/SQL, UNIX Shell Script
JavaScript Frameworks	HTML5, CSS3, JavaScript, AJAX, JSON, Bootstrap, jQuery, Angular2.0/4.0, React JS with Flux, Redux, Ember JS, Knockout JS, Back Bone JS, Handlebar JS, Node JS, Express JS, Hapi JS
Java/J2EE Technologies	Servlets, Spring, EJB, JPA, JTA, JDBC, JSP, JSTL,
Frameworks	Struts 2.0/1.0, Hibernate 4.x/3.x, Spring 3.0, Spring Batch, Spring Security, Spring AOP, Spring Core, JSF, IBatis, Spring IOC.
Web Technologies	HTML, HTML5, CSS/CSS3, AJAX, jQuery, Bootstrap, XML, Grunt, Gulp, JSON.
Database	Oracle 8i/9i/10g/11i, DB2, SQL Server 2000/2005/2008, MYSQL, MongoDB, Raven DB, Cassandra
Web Services	XSD, WSDL, Apache Axis, SOAP, Restful, GraphQL, JAX RS, JAX WS
Messaging	JMS (Java Message Service), IBM MQ, Apache Active MQ, Apache Kafka
Web/Application Servers	Oracle Web logic, IBM Web Sphere, JBoss, Glassfish, Apache Tomcat
Messaging Services	JMS, Active MQ, Rabbit MQ, IBM MQ, Apache Kafka
Methodologies	Agile, Waterfall, OOAD, SCRUM
Testing Tools	Junit, TestNG, Mockito, Jasmine, Karma, Mocha, Chai, Spock, Protractor
Version Control	SVN, CVS, GIT and Clear Case
Build& Configuration Tools	Ant, Maven, Gradle, Jenkins, Bamboo Gulp, Grunt, Webpack, NPM, Bower
Project Management Tools	JIRA, Rally, Microsoft Project
Cloud Technologies & DevOps Tools	AWS, PCF, EC2, S3, Docker, ECS, EBS, EKS, SQS, RDS, S3, Glacier, Lambda, Kubernetes
IDEs	Eclipse IDE, RAD 6.0/7.0, Intellij IDEA, Spring Tool Suite (STS), Sublime Text, Putty
Operating Systems	Windows, Linux and UNIX
Software	Visual Studio, Rational Rose and Microsoft Office

 

 

 

professional experience

 

Client:  AVERA Health, Sioux Falls, SD.                                                        (Feb 2017-Current)

Role:  Full Stack Java Developer

 

Description: Avera Health is a major health care system in upper Midwest and provides top-quality health services. It serves more than 1 million people through hospitals, clinics, senior living facilities, sports and wellness facilities in more than 300 locations. My role in this project is to develop web applications to quicken health record functionalities, check the patient details, pull the insurance and patient record and process the health services.

 

 

Responsibilities:

 

·         This application is built on Micro Service Architecture using MEAN (Mongo, Express, Angular 4.0 and Node) stack and developed Single Page Applications (SPA).

·         Designed efficient Interaction pages using HTML5, CSS3 and Bootstrap CSS framework and media queries to create responsive web pages.

·         To allow fully encapsulate custom elements, created custom elements, HTML imports and Shadow Dom, pipes using Angular 4 and implemented Angular Router to enable navigation from one view to the next as the user performs application task.

·         Implemented form validation on HTML forms using the built-in validation properties and methods in Angular 4.0.

·         Have worked with reactive forms, template driven forms and written pipes in Angular 4.0 to transform the data.

·         Developed client-side validation code using JavaScript and JQUERY.

·         Worked on various features in ECMAScript 6 (ES6) such as Arrow functions, Classes and enhanced object literals.

·         Created cross-browser compatible and standards-compliant CSS-based page layouts.

·         Used Angular 4 Lazy Loading and ahead of time compilation to optimize the performance of application.

·         Developed angular views to hook up models to the DOM and synchronize data with server as a SPA.

·         Used Built-in AJAX HTTP Service with observables extensively for making quick and incremental updates to UI of the application.

·         Developed RESTFUL web services using Spring Boot.

·         Used Microservices for creating API’s services with Spring Boot to modularize code and implemented Swagger for dynamic API documentation.

·         Used complete annotation driven approach to develop the application using Spring Boot and was involved in setting up the Spring bean profiling.

·         Extensively worked in integrating JMS (Java Messaging Service) with SPRING BOOT for reliable information exchange across Java applications using ActiveMQ to communicate from Client to Server.

·         Developed Microservices using Spring Cloud Netflix OSS stack to address Load balancing using Ribbon, API Gateway using Zuul, Fault Tolerance using Hystrix.

·         Unit testing of web services is done using Spock framework by extending Groovy syntax.

·         Used OAuth 2.0 protocol for authorization of server and JWT to generate to access a protected resource on a resource server.

·         Developed Mean Stack application from scratch including Mongo DB server setup and Express-JS server development.

·         Developed RESTful web services using Node JS and Express JS and used Node JS server to interact with the Rest services and database, hosted on multiple load balanced cloud instances.

·         Implemented services call from Angular at client to Node JS using Express JS. 

·         Implemented Node JS as a server-side proxy for an event-driven, non-blocking I/O model to make the application lightweight and efficient.

·         Configured Express JS node http framework to set up middle-wares to respond to HTTP requests and used its front-end tooling like Web packs, Starter packs, Boiler plates efficiently.

·         Used Postman to test the API workflow tested on the JSON files which are generated by the NodeJS, Express JS.

·         Focused on Test Driven Development (TDD) for UI testing we have used Jasmine and Karma for Angular and for back end we used Mocha and chai for Node JS, Junit and Mockito for Spring Boot and embedded databases like HSQL and function testing we use Spring MVC mock.

·         Handled unstructured data using MongoDB and used Mongoose connector to connect to database.

·         Composed and executed MongoDB scripts and queries to fetch and test data from NoSQL databases.

·         Performed configuration, deployment and support of cloud services including Amazon Web Services (AWS). Launch various AWS EC2 instance to deploy the application.

·         Implemented AWS solutions using E2, S3, RDS, EBS, Elastic Load Balancer, Auto scaling groups, Optimized volumes and EC2 instances and created monitors, alarms and notifications for EC2 hosts using Cloud Watch.

·         Used AWS Lambda to run the code and manage the servers in AWS with the help of API.

·         Deployed application into Docker container and Docker consoles for managing the application life cycle on Kubernetes deployment manager and monitored on Git.

·         Experience in maintaining log delivery system by creating producer, consumer and broker architecture using Apache Kafka.

·         Used Apache Kafka in cluster as messaging system between the APIs and microservices.

·         Worked on Splunk search processing language (SPL) queries, reports, alerts, dashboard, visualizing and logging using Log4j.

·         Worked with the automation team to understand the Selenium scripts and review the code, run the tests and review the results and provide inputs to the team.

·         Used Maven as build tool and Jenkins for CD/CI deployment process and used GIT for version management.

 

Environments:

Angular 4, Java 1.8, Node JS, Express JS, HTML5, CSS3,MongoDB, Mongoose, jQUERY, ES6,Spring 4.2.0, AWS, REST services, OAuth 2.0, Swagger 2.0, Jasmine, Karma, Mockito, Apache Kafka 0.11.0.1, Junit 4, Log4j, Selenium 3.0, GIT, Kubernetes, Maven 3.3 and Jenkins.

 

            

Client:  Nike, Hillsboro, OR                                                                            (Jan 2016- Feb 2017)

Role:  Sr. Java Full Stack Developer

 

Description:

Nike is a multinational corporation, design and manufactures athletic footwear and apparel. It is the most valuable sports brand in the country. My role in the project includes developing UI components for various modules, design and developing services and applications for online ecommerce website which provides customer better experience in placing the order and managing status of the orders.

 

Responsibilities:

 

·         Created UI specification documents by interacting with business users and design documentation and data modelling for the entire project.

·         Designed and developed efficient web pages using HTML5, CSS3-SASS and Twitter Bootstrap CSS framework and media queries to create responsive web pages.

·         Expertise in using React.js/Redux to build User Interface, strong knowledge of state store, middleware, action creator, reducer and container.

·         Written several Axios service calls like get and post to make REST service calls.

·         Developed user interface by using the React JS, Redux for SPA development and implemented client-side Interface using React JS.

·         Created responsive design and developed a single responsive website that could be served to desktop, Tablets and mobile users using React JS.

·         Implemented Redux Form to build Report Data Grid, tree grid, and developed DataGridItems which can be dragged by IRD system users.

·         Implemented Virtual Dom for Client-Side view rendering services using REACT JS.

·         Worked on Redux/NGRX and understanding of the Redux pattern.

·         Wrote Client-Side code using React JS and used NPM, directories to generate the server environments used browserify, flux to manage with targeted URL's (Uni-Directional data flows) and to monitor the application. 

·         REACT JS Virtual DOM used for client-side view rendering services, React-Redux for state management and React-Router for programmatic navigation.

·         Building cloud Microservices and implemented back-end using Spring Boot.

·         Worked with Microservice architecture using Spring Boot to modularized code and implemented Rest API’s using Spring Rest and integrated Swagger API for documentation.

·         Implementation domain base classes providing basic properties using Spring Data.

·         Worked with JAVA8 features like Functional Interfaces, Stream API for Bulk Data Operations, Time API, Transaction Management, Concurrency API, Collection API, Calendar API.

·         Created reusable templates using Angular directives and worked with NPM package manager tools (Node JS).

·         Experience in maintaining log delivery system by creating producer, consumer, and broker architecture using Apache Kafka.

·         Used Apache Kafka in cluster as messaging system between the API’S and microservices.

·         Experience in Docker Engine and Docker Machine environment, to deploy the micro services-oriented environments for scalable application.

·         Proficient in writing react code with help of ECMAScript (ES6) and JSX.

·         Deployed our Application on Pivotal Cloud Foundry which is used to reduce the development overhead by providing a ready to use platform.

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