Home

Ashok - Java developer

[email protected]

Location: Remote, Remote, USA

Relocation:

Visa: H1B

Summary of Experience: Around 9+ years of IT experience in analysis, design, implementation and testing of various Client/Server Applications, Web Based Applications using Java, J2EE Technologies, Object oriented programming Concepts and Database administration. Worked as a full stack senior Java developer by Extensively working through Object Oriented Analysis in developing server side and front-end framework using Java, J2EE design patterns. Experience working with Web based Application design & development using Java/ J2EE Technologies like JDK 8, Java 8, JSP, JSF, jQuery, JavaScript, Node Js, React Js,HTML5, CSS,XML and JMS. Expertise in React JS framework to develop the SPA. Experienced in React JS and working with React Flux architecture. Experienced in working with Redux architecture using complex Object-Oriented concepts in improving the performance of the websites. Experience in using React JS components, Forms, Events, Keys, Router, plus Redux, Animations and Flux concept. Experienced in working with Node.JS and NPM modules like http-server, Marathon, inquirer, path, mongo DB, Micro Services, Request, Elastic Search, express, luck, spark and templating engines. Experience in Node environment using Node.js, NPM, Grunt, Gulp, Groovy Bower. Strong in using the Node.js, and Require.js and MVC Frameworks in the development of the web application. Experience with J2EE design patterns such as Intercepting Filter, Front Controller, Business Delegate, and Data Access Object. Strong experience in developing Web applications and mobile applications using all J2EE related technologies like Servlets, Struts, Spring, JSF, JSF,JDBC, JNDI etc. Strong programming skills in Core Java Such as Multithreading, I/O Streams, Collection interfaces and Exception Handling. Experience in implementing Web Services (REST, SOAP)using Spring WS and JAX-RS in and created web service clients. Developed user interface by using the React JS, Flux for SPA development. Implemented react JS code to handle cross browser compatibility issues in Mozella, IE 7, 8, 9, Safari and FF. Used React-Router to turn application into Single Page Application Worked in using React JS components, Forms, Events, Keys, Router, Animations and Flux concept. Used Web services (SOAP and RESTful) for transmission of large blocks of XML/JSON. Worked on responsive design and developed a single ISOMORPHIC responsive website that could be served to desktop, Tablets and mobile users using React.js. Maintained states in the stores and dispatched the actions using redux. Implemented the Drag and Drop functionality using React-Draggable Used React-Autocomplete for creating google maps location search on the web page Added Excel-Builder to download the Tabular data in Excel format using react. Experience in performing unit test for the applications using Junit Framework Good experience in writing Spark applications using Python and Scala Used Scala sbt to develop Scala coded spark projects and executed using spark-submit. Involved in developing a linear regression model to predict a continuous measurement for improving the observation on wind turbine data developed using spark with Scala API Used Spark and Spark-SQL to read the parquet data and create the tables in hive using the Scala API Implemented Spark using Scala and utilizing Data frames and Spark SQL API for faster processing of data Experience in developing Microservices using Spring-Boot. Implemented the persistence layer using Hibernate-ORM. Exposure to python scripting for automating various task like data migration, file split etc Experience with various RDBMS/ Database servers like Microsoft SQL Server 2000/2005. Experience with IDEs such as IntelliJ, Eclipse and NetBeans. Worked on build tools: ANT, MAVEN.Worked on Messaging systems like J Rolling upgrade cluster from Kafka 0.9/0.10.2/0.11 without any downtime/data loss while upgradation. MS, RabbitMQ, ApacheKafka etc. to communicate between publishers and consumers. Experience in writing SQL queries and PL/SQL Programming (Stored Procedures, Cursors and Triggers) with databases such as Oracle8i/9i/10g & MySQL Experience in creating Use-Case Diagrams, Class Diagrams, Sequence Diagrams in UML and Rational Rose. Excellent experience in developing Back-end applications using Web Services and Spring-REST, JSON, REST-based APIs. Experience with automation testing tools: Postman API, Selenium Web driver, QTP(VBScript). Implemented Perl packages extensively. Used multithreading. Used SOAPLite module to communicate with different web-services based on given WSDL. Extensive Development experience in various open-source frameworks (STRUTS, Log4j, ANT, HIBERNATE, SPRING & AJAX). Sapphire knowledge Exposure to defect tracking tools JIRA, Agile Craft, Technology Driven Platform (TDP) and HP Quality Center. Hands on experience with Unified Modeling Language (UML) and used it for developing various UML design diagrams like Use Cases, Class Diagrams, Sequence Diagrams and Component Models for the project requirement/ design specifications using Rational Rose and IBM Rational Software Architect (RSA). Good experience with various Web/ Application Servers like IBMWebSphere, JBOSS and Apache Tomcat. Involved in writing and reviewing Unit Test using JUNIT and Mockito. Expertise in using Version Management Tools CVS, SVN, GIT & Sub-version. Extensive experience includes Change/Incident Management, VMware and AWS Cloud computing. Managed Amazon Web Services like EC2, S3 bucket, RDS, EBS, ELB, Auto-Scaling, AMI, IAM through AWS Console and API Integration with Puppet Code.Designed and Implemented a Microservices container CI/CD solution within AWS leveraging Jenkins, GitLabs, Docker, Ansible and Kubernetes. Experience in different Operating Systems/ platforms like Windows, Linux and UNIX. Excellent problem solving, analytical, interpersonal and communication skills. Ability to work in-groups as well as independently with minimal supervision. Ability to learn new languages and Tools quickly. Have also worked on Java 8 along with Cold Fusion. Education: Completed BTech in Computer Science Engineering from GITAM University Vizag, India in the year 2014. Technical Skills: Programming Languages Java, Python Scripting Databases Oracle 9i, MS SQL Server, My SQL, Cosmos DB, MongoDB IDE Tools Eclipse, STS, NetBeans, IntelliJ Web Technologies HTML5, CSS, NodeJS, JavaScript, AngularJS, Bootstrap J2EE Technologies Hibernate, JSP, JMS, Spring MVC, Spring JDBC, Spring Security, Restful Web Services Application Servers Apache Tomcat v8.5, JBoss 6.1, JBoss 7.0.1, IBM WebSphere WAS 8 Defect Management Agile Craft, JIRA, HP Quality Center, Technology Delivery Platform (TDP) Operating Systems Windows 7, UNIX, LINUX Other Tools Junit, Log4j, ANT, Maven, Squirrel, Putty, WinSCP Project Experience: Client: Visa, Austin, TX. Mar 2022 Till Date Role: Senior Java full Stack Developer Responsibilities: Conduct grooming sessions with the offshore development team and explain the use stories. Provide technical assistance to the offshore development team and review their daily tasks reports. Coordinate with onshore and offshore counterparts. Collaborate with cross teams and do the integration testing to ensure the end to end flow is working Analyze user stories and get all the required inputs by collaborating with dependency teams. Identify blockers encountered by the offshore team and resolve them by interacting with the corresponding teams. Plan, deploy, monitor, and maintain Amazon AWS cloud infrastructure consisting of multiple EC2 nodes and VMWare Vm's as required in the environment. Worked in managing VMs in Amazon using AWS and EC2. Configure event rules in the Emergency rules engine(ENS) and Associate Notification Service(AANS) to accept the payload from EOC, SCO, Exit teams, process and publish to the sumo. Worked on the Associate Data Service (ADS) project to develop end points, to get the associated data. Implemented Azure Redis cache and SQL DB to optimize the performance of the API s. Wrote Junit test cases for method level testing and used REST Assured for API testing. Worked on responsive design and developed a single ISOMORPHIC responsive website that could be served to desktop, Tablets and mobile users using React.js. Maintained states in the stores and dispatched the actions using redux. Implemented the Drag and Drop functionality using React-Draggable Used React-Autocomplete for creating google maps location search on the web page Added Excel-Builder to download the Tabular data in Excel format using react. Monitor the production logs to ensure the Event Horizon connection is always up and running. Work with the business team to get clarity on the backlog items, prioritize and track them to closure. Develop design specifications, installation instructions, implementation & security guidelines and other system-related information. Designing and developing web applications using Apache Camel, Spring and Restful web services. Implement solutions focusing on reuse and industry standards at a program level. Verify stability, interoperability, portability, security and scalability of java system architecture. Ensure compliance with established architecture, design patterns, policies, standards and best practices by handling SRCR requests. Migrated applications from internal data center to AWS. Used Spring Boot to create stand-alone spring applications. Consume REST based Micro services with Rest template based on RESTful APIs. Maintained the user accounts RDB, Dynamo DB, SES, SQS and SNS services in AWS cloud. Hands on experience in Azure Development, worked on Azure web application, Azure Function App, Key Vault, Application Insights,Cosmos DB and notification hub. Azure resource management Experience in Network Security Groups (NSGs) to control inbound and outbound access to network interfaces (NICs), VMs and subnets. Worked on VNets and subscriptions to confirm Azure Network Limits. Extensive involvement in Designing Azure Resource Manager Template and in designing custom build steps using PowerShell. Configure and deploy Microsoft Azure for a multitude of applications utilizing the Azure stack (Including Compute, Web & Mobile, Blobs, Resource Groups, Azure SQL, Cloud Services, and ARM), focusing on high - availability, fault tolerance, and auto-scaling. Design, develop (Coding, Review, Unit testing, debugging & deployment & Operations & Support) and maintain java software applications. Implemented RESTful Web Services to retrieve data from client side using Microservices architecture. Recommend chanClosely worked with Kafka Admin team to set up Kafka cluster setup on the QA and Production environments. Extensive experience with the searching engines like Apache solr and ElasticSearch. Experienced in deploying the Apache solr zookeeper cluster in cloud, on Premises, working on the data storage and disaster recovery for solr zookeeper. Developed Junit test cases ensure the robustness of the solution. Develop cloud formation scripts to build on demand EC2 instance formation. Had knowledge on Kibana and Elastic search to identify the Kafka message failure scenarios. implemented to reprocess the failure messages in Kafka using offset id. Implemented Kafka producer and consumer applications on Kafka cluster setup with the help of Zookeeper. Used Spring Kafka API calls to process the messages smoothly on Kafka Cluster to improve established java application processes. Wrote numerous test cases for unit testing of the code using JUnit testing framework. Debugging the failure issues by capturing the array and register dumps using Python scripts, traces and performing several experiments by interacting with the design team. Deploy the Java app in Azure cloud and implement the CI/CD DevOps deployment. Environment: Java, J2EE, Spring Boot, Javascript, Microservices, RestfulAPI, AWS, EC2, S3, Lambda, Auto Scaling, Cloud Watch, Cloud Formation, Security Groups, CI/CD, Jenkins, Docker, Junit, Python, Zookeeper, Kafka, Azure, Powershell. Client: Morgan Stanley, New York Sept 2021 Feb 2022 Role: Senior Java full Stack Developer Responsibilities: Responsible for developing APIs using Spring RESTful and JAX-RS with versioning of the API. Responsible for writing services and provides a micro services (mS) architecture to the client to send requests. Developed microservices with Spring and tested the application using Spring Boot. Used Spring Core annotations for Spring Dependency Injection, Spring MVC for Rest API's and Spring Boot for microservices. Worked on a spark ecosystem using Spark SQL and Scala queries on different formats like Text file, CSV file. Experienced in working with the spark ecosystem using Spark SQL and Scala queries on different formats like Text file, CSV file. Developed the core search module using the Apache solr and customized it for handling fallback searching and to provide custom functions. Expertized in implementing Spark using Scala and Spark SQL for faster testing and processing of data responsible to manage data from different sources. Developed crypto rest services using NodeJS and integrated services with B2C storefront. Worked with modules like MongoDB and mongoose for database persistence using Node.js to interact withMongoDB. Expertise in React JS framework to develop the SPA. Experienced in React JS and working with React Flux architecture. Experienced in working with Redux architecture using complex Object-Oriented concepts in improving the performance of the websites. Experience in using React JS components, Forms, Events, Keys, Router, plus Redux, Animations and Flux concept. Good Experience in React.js for creating interactive UI using One-way data flow, Virtual DOM, JSX, React Native concepts. Familiar with creating Custom Reusable React Components Library. Worked on backend using Scala 2.12.0 and Spark 2.1.0 to perform several aggregation logics Worked on automation of data migration and processing using Python scripting Expertized in implementing Spark using Scala and Spark SQL for faster testing and processing of data responsible to manage data from different sources Experienced in MEAN stack development MongodB, Express, Node, and Angular. Responsible for developing web pages in application using AngularJS for all the modules used in application and invoke http REST calls for dynamic web content generation. Designed user interface layout using CSS3, HTML5, NodeJS and AngularJS. Worked in the Continuous Integration and deployment (CI/CD) environment to integrate various dependent modules in the application in which the modules communicate by making REST calls. Developed the web application end to end using MVC architecture and DAO design pattern. Designed dynamic tables on the UI using open source data tables and jQuery, React Js implemented a generic server-side pagination utility. To manage objects and to achieve dependency injection, IOC used Springframework configuration files. Configured LDAP to store credentials which are used to store data of users. LDAP data is used to give access to users to provide Single Sign On advantage for the end users. Involved in designing and processing of Workflows, Policies and Rules depending on the business which are used for approvals and granting access to create accounts on the endpoints. Involved in migration of Legacy applications. Used Java 8 Method References feature to point to methods by their names and used functional Interfaces. Used Java8 features like stream and Lambda expressions. Involved in migration of RSA 8 from RSA 6. Responsible for migrating from one schema to another schema. Responsible for migration of the code to support different schemas. Worked on creating new users and saving their info on the LDAP so that the data can be accessed by any application in the system. Responsible for creating transactions when an access is granted to the user and for Reconciliation of the accounts. Responsible and developed Policy Engine to standardize process and automation for proper classification of access along with consideration of SOD and Privileged Access. Responsible for developing a single Restful utility module which can be reused by all other modules in the application. Used Jackson API for request and response processing. Worked on bulk UI writing Using Sapphire data model. Responsible for developing a security framework for authorization of the users. Worked on Messaging systems like J Rolling upgrade cluster from Kafka 0.9/0.10.2/0.11 without any downtime/data loss while upgrading. MS, RabbitMQ, ApacheKafka etc. to communicate between publishers and consumers. Updating kernel & security patches in Amazon linux environment, handling out of memory issues in Linux kernels during rebalance in Kafka clusters. Deployed Apache Zookeeper, Kafka and Cassandra server on AWS Cloud. Worked with cloud providers AWS to build hybrid cloud as we have some private servers on our premises, also we have distributed some of the workload on the public cloud. Implemented AWS solutions using E2C, S3, RDS, Elastic Load Balancer, Auto-scaling groups. Deploy and monitor scalable infrastructure on Amazon web services (AWS) & configuration management using Ansible. Implemented a Docker delivery pipeline allowing for CI/CD of tomcat web service containers. Managing Amazon Web Services (AWS) infrastructure with automation and configuration management tools such as Ansible, or custom-built, designing cloud-hosted solutions, specific AWS product suite experience. Regression testing was performed after each build release of the application and updated the Scripts by executing the Regression suites built using Selenium and approved for a regression suit. Drove testing with VS, .Net, C# and NUnit testing with heavy encapsulation to extend Azure WEB app test suite. Used defect tracking tools like JIRA to handle the issues. Validated Web Services and RESTful calls by comparing the data with Database and User Stories Created Selenium Test cases for automation using Selenium Web Driver and Java. Used Hybrid Framework of Selenium to get data from Excel. Build a detailed, reusable, Script free Keyword + Data Driven framework for over 45% Test cases using Selenium WebDriver + TestNG. Improved testing efficiency by preparing and executing Batch tests using UFT. Expertise in developing C# .NET based Test Scripts to implement Test Cases, Test Scenarios, and features for TDD (Test Driven Development) using NUnit on automation tool Selenium. Responsible for developing applications using Test Driven Development (TDD) process which proceeds to an Outside-in architecture and is responsible for ensuring code coverage. Implemented common library code base for similar functionalities on different UI modules. Created a facility enables users to build applications using a portal to make development operations easier and monitored. Implemented Spark using Scala and Spark SQL for faster testing and processing of data. Implemented Spark using Scala and utilizing Data frames and Spark SQL API for faster processing of data. Worked in Agile (SCRUM) environment, used Jenkins, GIT and SVN subversion. Responsible for ongoing production issues and on call support for client-side and server-side applications. Involved in various design reviews and code review meetings. Responsible for code reviews and mentoring the team members about the application and upcoming features. Experience on Python programming language. Maintain Interface compatibility and concurrency in the project using Java 8 new features like default, static methods and Concurrency API. Used Java 8 Method References feature to point to methods by their names and used functional Interfaces. Worked on Functional Interfaces and Lambda Expressions using JDK 8. Environment: Java 1.7, RESTful API, JAX_RS, AngularJS, Node Js, React JavaScript, microservices, Spring JDBC, Oracle 12c, JBoss 6.1., Tomcat v8.5, GIT, Code cloud, Source tree, Junit, Log4j, Python. Client: Edward Jones, St Louis, MO Jul 2019 Aug 2021 Role: Java full Stack Developer Responsibilities: Performed complete application life cycle functions (SDLC) using Agile Methodology from conception to final release to users including design & analysis, Implementation, Testing, Deployment and Maintenance. Interacted with Business Analysts and end users in gathering requirements. Prepared technical artifacts including UML Class diagrams, Sequence diagrams etc., using Rational Rose. Developing the framework based on JSF Prime faces. Designed user interface layout using CSS3, HTML 5, NodeJS and AngularJS/React Js. Developed logging module-using Log4J to create log files to debug and trace applications. Implemented Ajax framework for various UI s. Developed Restful Web services for transmission of data in JSON format. Use Jenkins Hudson continuous auto build tool for continuous integration. Implement the persistence layer using Hibernate-ORM. Implement and review Unit Test using JUNIT and Mockito. Developed Test classes using JUnit and test coverage using the EMMA plugin. Use JIRA for User stories creation and task allocation. Configure MAVEN in the workspace for building the project. Implement named Queries and criteria queries for Service and DAO layer. Use Prime faces components for UI development. Implement the UI using XHTML, JQuery, JavaScript, JQuery, NodeJS Ajax, JSTL and CSS stylesheet using prime faces libraries. Implement Client-Side validations through Prime Faces validations framework. Coordinate Stand-Up meetings with the team to ensure teams are in sync and to meet Production requirements. Continuously streamline and improve the TestingLifeCycle to ensure Test Planning, Execution, and reporting coordination using Junit test cases. Responsible for developing the functionalities identified for each Sprint. Participate in Sprint meetings & device schedule. Implemented named Queries and criteria queries for Service and DAO layer. Environment: Tomcat Server, JAVA EE, JSF Prime faces, JavaScript, jQuery, AJAX, XHTML, HTML5, XML, AngularJS,NodeJS, Hibernate JPA, Named Queries, Criteria Queries, CSS3, MAVEN, CVS, NEXUS, Log 4J, Apache Tomcat, Unix, Eclipse, Jenkins, Action Components. Client: Transaction Network Services, Reston, VA Feb 2019 Jun 2019 Role: Java/J2EE Developer Responsibilities: Participated in the analysis, design, and development, testing phases of Software Development Life Cycle (SDLC). Used Rational Rose for developing Use case diagrams, Activity flow diagrams, Class diagrams and Object diagrams in the design phase. Developed Custom Tags to simplify the JSP code. Designed UI screens using JSP, XML, NodeJS and HTML. Used JavaScript for client side validation. Developed the application using Struts Framework developed action classes, form beans and Java Server Pages. Developed Session beans which encapsulate the workflow logic. Designed and implemented Session Fa ade, Service Locator, Business Delegate and Data Access Object design patterns. Designed and developed Message driven beans that consumed the messages from the Java message queue and generated emails to be sent to the customers. Used Web services for sending and getting data from different applications using SOAP messages, such as credit reports, between the bank and the credit bureaus. Used JAXB XML parser for data retrieval. Used EJB extensively in the data access layer to access and update information in the Oracle 10g database. Used JUnit framework for unit testing of application and Maven to build the application and deployed on JBoss. Used Log4J to capture the log that includes runtime exceptions. Used CVS for version control and used Eclipse for implementing the application. Environment: Java, J2EE, Struts, EJB, JSP, Servlets, JMS, XML, SOAP, WSDL, JAXB, JavaScript, NodeJS, CSS, Rational Rose, UML, HTML, JNDI, CVS, MDBs, Log4J, JUnit, ANT, PL/SQL, Oracle10g, Eclipse, JBoss, Unix. Client: Kors Engineering, Waterford, MI Feb 2018 Jan 2019 Role: Java Developer Responsibilities: Designed Forms using the HTML Controls. Developed Base Classes code for developing the Application. Programmed for mailing and maintaining the log files. Applied design standards to the Reports Tab and the other internal applications. Monitor database system resources and performance. Tested and integrated the code at the module levels. Developed the Utility programs for searching the database. Environment: JDK1.2.2, JDBC, Servlets, JSP, XML, Java script, Eclipse, Oracle, PL/SQL and Windows XP, Clear case. Client: TechJini, India Sept 2016 Jan 2018 Role: Java Developer Responsibilities: Involved in complete SDLC management Requirements gathering, Design, Analysis, Development and Testing. Developed UML diagrams to develop use cases for University s Financial Services web application. Implementing the Struts 1.3 framework for Model View Controller (MVC) pattern. Used Struts framework along with JSP, Servlets, HTML, CSS, JQueryand JavaScript to construct dynamic web pages. Performed validation for client side as well as server side with the help of Struts Validation Frame Work. Involved in the implementation of Stateless session beans(EJB) for business logic layer and Entity beans for persistence. Supported existing applications developed using Spring MVC, AOP framework. Used JPA mapping techniques such as One to One, Many to One and Many to Many mappings to represent relation between various entities in the project. Configured and used JBoss application server for creating Datasource and enabling JNDI for beans and database lookups. Deployed components on JBoss and Web Sphere application server. Worked Oracle database to create databases of student and faculty login information and their desired areas of study. Worked on Eclipse as IDE tools to build up applications. Developed codes for ActionServlet, RequestProcessorand Action classes by extending Struts package. Used EJB 3.0 Message Drive Beans to initiate daily process. Executed quality and assurance testing in developed application, reduced performance errors on average by 95%. Resolved Blackboard problem tickets and made 100% follow ups maximizing the customer satisfaction. Installed SSL certificates on the developed application. Provided weekly status reports to the manager with the latest information of all ongoing activities. Followed the Java coding standards for scalability, reusability and ease of maintenance. Created XML Schema, XML template and XSL. Developed Web Services Application using SOAP and WS-Security. Environment: Java 1.5, TDD, Struts 1.3, EJB 3.0, Jquery, JSP, HTML, CSS, Servlets, SOAP, WS-Security, JMS, MQ, Eclipse, SVN, Ajax,JNDI, JBoss, Selenium WebDriver, Junit. Client: Embytes Solutions, India June 2014 July 2016 Role: Jr. Java Developer Responsibilities: Designed and coded application components in an Agile environment. Implemented Model View Controller (MVC-2) Architecture using Jakarta Struts framework at presentation tier. Involved in coding, building java applications using Core java, Multithreading, JSP and Servlet. Developed the application using Struts framework. The views are programmed using JSP pages with the struts tag library, Model is the combination of EJB's and Java classes and web implementation controllers are Servlets. Implemented core java Multithreading, Collections, Exception Handling, and OOP's concepts. The Java Message Service (JMS) API used to allow application components to create, send, receive, and read messages. Expertise in coding optimized SQL queries on databases like Oracle. Used Struts frameworks and MVC design patterns to complete several projects on complex areas of development including user interface design, batch processing, stored procedure development, XML, data exchange and integration. Extensive use of Struts Framework for Controller components and view components. Implemented Spring IOC for inter connection between modules in our application. Designed and Developed UI using JSP by following MVC architecture. Developed back-end PL/SQL packages, UNIX shell scripts for data migration and batch processing. Created and customized UNIX shell scripts for automating regular maintenance and batch jobs. Involved in performing Unit and Integration testing Junit. Environment: Core Java, J2EE, JSP, Struts, Spring IOC, EJB, Struts, Windows Keywords: csharp continuous integration continuous deployment quality analyst user interface message queue javascript sthree database information technology hewlett packard microsoft procedural language Idaho Michigan Missouri Texas Virginia