Darshan Krishna Email & Phone Number

Indiana, United States

● Involved in Various Stages of deliverables of the project using the AGILE Software development methodology● The modules of the application are based on Spring MVC architecture and J2EE technologies.● Designed and developed web-based applications using Java 8, Spring, SQL.● Responsible for developing the application using Angular 7/8, Node JS, Typescript, JSP, CSS3, HTML 5, jQuery, Bootstrap, Struts and JavaScript.● Used Rational Application Developer (RAD) as Java IDE tool for creating JSPs, Servlets, EJBs, and XML.● Implemented the project of Microsoft .NET Development including C#, ASP.NET, Web Services, MVC.● Built centralized logging to enable better debugging using Elastic Search Logstash and Kibana. ● Identifying the problem areas by using elastic search Kibana with Logstash to import .csv files. Using Solr over Lucene index provided a full text search for analysis and quantification.● Worked with NPM commands and using packages. JSON for managing dependencies and dev-dependencies of Node JS.● Implementing Service oriented architecture (SOA) and OOP concepts using Web Services like SOAP, REST services.● Designed and developed the application using agile methodology and followed Test Driven Development (TDD), Scrum.● Developed web pages using Servlets and XML for various modules.● Created data and security architecture patterns for Microservices in a coexistence scenario.● Use modern data analytics and tools including elastic search, Kibana, build efficient application metrics monitors.● Extensively worked with Spring framework and also struts Config files.● Created new RESTful Web Services using JSON data format to communicate with external system using Spring MVC.

Massachusetts, United States

• Involved in SDLC Requirements gathering, Analysis, Design, Development, and Testing of the application using the AGILE methodology. • Expert level skills in developing applications using Core Java, J2EE, JSP, Servlets, Spring, Hibernate, Web Services (SOAP and REST), Collections, JDBC, XML, HTML, XHTML, HTML5, CSS, JSON, JavaScript, Ajax, Design Patterns, XSL/XSLT and JQuery. • Used various Core Java concepts such as Multi-Threading, Exception Handling, Garbage Collection, and Collection APIs to implement various features and enhancements. • Develop and maintain the client applications which directly increase customer user satisfaction and improve the messaging standards DMS(Digital-Messaging-System).• Improvising the application performance by adding WEB API, and Microservices, working on MVC model application doing enhancement to the application used by Capital One business customers.• Created custom SharePoint Web Parts using Visual Studio 2005, asp.net, C# with Microsoft. SharePoint and Microsoft. SharePoint. Webpart pages object model.• Analyses, Designs, Implementation, and tests, the back-end services using Spring Boot microservices.• Responsible for the Design, Development, Unit Testing, and System Integration Testing of assigned tasks planned during PI.• Involving in change request and response process, troubleshooting issues raised by business customers, and providing resolution.• Participating in development projects and upgrades. Involved with business entities on feasibility, the technical requirement for a new initiative

Atlanta Metropolitan Area, Georgia, United States

• Designed and implemented the User Interface using JavaScript, HTML, XHTML, XML, CSS, JSP, and AJAX.• Used Spring JDBC to execute database queries. Created row mappers and query classes for DB operations.• Used spring framework for Dependency Injection and JDBC connectivity.• Developed RESTful Web services client to consume JSON messages using Spring JMS configuration. Developed the message listener code• Design HTML prototypes, visual interfaces, and interaction of Web-based design.• Developed the business components using EJB Session Beans.• Involved in developing business components using EJB Session Beans and persistence using EJB Entity beans.• Involved in the development of the services layer using design patterns such as Session Façade, DAO, and Value Object etc.• Implemented monitoring and established best practices around using elastic search and Install and configuring monitoring scripts for AWS EC2 instances.• Worked on JBOSS locally and WebSphere in higher environments.• Involved in development of custom Servlet handling HTTP request and response objects.• Developed Web service modules based on SOA architecture to consume services.• Involved in developing the DAO layer to interact with MySQL database.

Texas, United States

• Involved in web application development using Angular 5, Angular CLI, Webpack, HTML5, TypeScript, SASS, and CSS3.• Used Angular 5 Reactive forms to implement complex forms and performed the validations using Form Builder.• Used various Bootstrap components such as calendars, masks, uploaders, sliders, alerts, and modal dialogs for developing the UI.• Build front-end using Angular 5 and upgraded to Angular 6 and back-end using ASP.NET MVC and RESTful APIs.• Implemented PrimeNG components for in-component navigation and visual design.• Consumed RESTFUL web services using Angular HTTP Module and transformed the response using RXJS operators.• Experience in upgrading and migrating various versions of Mongo database on different platforms. Designed and developed custom Mongo applications specific to clients' needs.• Created Angular Http Client interceptors to add necessary JWT tokens for the outgoing requests from UI.• Worked with RXJS Observables and operators when working with HTTP JSON• responses and defined custom error handlers to handle error scenarios.• Used Wijmo components such as Flex grid, Multirow data grid, Flex charts, etc. for creating the UI pages.• Created and injected Spring services, Spring controllers, and DAOs to achieve dependency injection and to wire objects of business classes.• Used Apache camel to integrate the different applications using protocols like HTTP and JMS.• Worked extensively on developing controllers, Interfaces, and implementation classes using Spring MVC framework & used a Microservice architecture with Spring Boot based service through REST.• Migrating existing applications into REST-based Microservices to provide all the CRUD capabilities using Spring Boot.• Managed servers on the Amazon Web Services (AWS) platform instances using Puppet, Chef, Ansible, Configuration management.• Implemented and managed Puppet configuration spanning several Dev, QA, and Staging environments in AWS cloud.

India

● Analyzed and extracted the event flows of the UI layer code written in JavaScript, Struts, Java Applets and JSPs to come up with the sequence diagram for various transactions.● Developed front-end using HTML, CSS, JavaScript, jQuery featuring the Implementation.● Applied Struts features like Tiles and Validation framework.● Designed and implemented Struts (MVC Paradigm) components such as Action Mapping, Action class, Dispatch action class, Action Form bean, and a form set for validation.● Implemented MVC architecture by using Struts/Swings to send and receive the data from front-end to the business layer. Integrated the Struts and Hibernate to achieve Object-relational mapping. Used Apache struts to develop the web-based components and implemented DAO. Leveraged struts-validations, struts-beans tag libraries.● Used Struts Action Servlet to route the request to corresponding Action Classes.● Developed stored procedures, triggers, and functions for the application.● Involved in designing data schema and development of SOAP web services with Axis implementation and REST web services with JAX-RS.● Consumed SOAP and REST web services to get the persisted data from different databases.● Configured Struts-Config. XML for action mappings.● Involved in implementing Value Object Pattern, MVC & Factory Pattern.● Deployed application into WebLogic Application Server.

• Followed Agile methodology meetings to track, optimize, and developed sequence diagrams depicting method interactions, using MS Visio.• Developed application using Spring MVC, JSP, JSTL, and AJAX on the presentation layer, the business layer is built using Spring and the persistent layer uses Hibernate.• Data Operations were performed using Spring ORM wiring with Hibernate and Implemented Hibernate Template and criteria API for the Querying database.• Developed various J2EE components like SAX, XSLT, JAXP, JNDI, LDAP, JMS, MQ Series.• Used AJAX in suggestive search and to display dialog boxes with JSF and DOJO for front-end applications.• Implemented all the components of the Spring Framework (Controller classes, Spring Bean Configuration file (dispatcher-servlet.xml).• Developed Web Services using XML messages that use SOAP. Developed Web Services for Payment Transaction and Payment Release.• Used WSDL and SOAP protocol for Web Services implementation.• Worked in the Struts framework based on MVC Architecture.• Wrote stored procedures, SQL scripts in Oracle for Data Accessing and manipulation.• Compiled and built the application using ANT scripts and deployed the application.• Configured and created applications log files using Log4J.