John Wen Email & Phone Number

Oakland, California, Us

Communication Hub provides a user-friendly solution for users to send and receive work items and messages between their teams with the ability to track(status,duration opened etc.)• Used OOAD Technology, classes are designed in UML with the help of Rational Rose.• Used Spring MVC framework to build RESTful web services.• Developed and deployed business logic using Session Beans and Servlets.• Created web pages and client side validations using HTML5 and CSS3 and JavaScript, AJAX,JSP. • Used Hibernate framework for back end development and Spring dependency injection for middle layer development.• Implemented core Java code with data structures and algorithms to the back-end.• Involved in debugging the application.• Used Maven to compile and generate EAR, WAR, and JAR files. • Created custom exception classes to display appropriate error messages. • Used JUnit for white box testing of application. Created test conditions/test data.• Used Log4j for logging errors and publishing logging information to various destinations. • Used Jenkins for continuous deployment. • Developed the system interface with webservice and JMS

Cleveland, Ohio, Us

Worked on development of Business Loans qualification and Delivery system.• Used Spring MVC framework to build RESTful web services.• Participated in various stages of the project life cycle, mainly design, implementation testing, deployment and enhancement of the application• Developed complex RESTful web services using Spring framework for extracting product and warranty information. • Implemented business logic using Session Beans, Servlets.• Development of persistent components using Hibernate 3.0. • Optimized the data model objects with core Java code.• Wrote SQL queries, PL/SQL stored procedures and modifications to existing database• Combined HttpClient and JWTs implement app authentication• Embedded an online chat in the web application with Node.js• Developed service side Service of the mobile and web application with Node.js and Express• Used MongoDB to store JSON format information• Used JUnit/Eclipse for the unit testing of various modules.• Used Jenkins for CI and deployment.• Developed content management system interface with Java API

Built web application and internal system based on client requirements, performing detailed analysis and client coordination to ensure needs are met. Designed user interfaces and CSS styles, implemented core services and modules, built databases, and interfaced with data. Created unit and automation test cases, and provided user support.• Participated in various stages of the project life cycle, mainly design, implementation testing, deployment and enhancement of the application• Developed complex RESTful web services using Spring framework for extracting product and warranty information. • Implemented business logic using Session Beans, Servlets. • Optimized the data model objects with core Java code.• Wrote SQL queries, PL/SQL stored procedures and modifications to existing database• Combined HttpClient and JWTs implement app authentication• Used JUnit/Eclipse for the unit testing of various modules.• Used Jenkins for CI and deployment.• Developed content management system interface with Java API

• Designed and implemented customized dashboard applications, extracting data from business systems to display relevant information and generate dynamic reports.• Coordinated with the client and upper level management, as well as cross-functional teams to test the solutions for production issues and customizations.• Performed software development utilizing technologies such as core Java, J2EE, Spring Framework, Hibernate, JSF, Servlet, and Oracle database.• Interacted with business users and collected the requirements. Analyzed business requirements, designed and recommended solutions over Agile Methodologies.• Developed web pages using HTML, CSS, JavaScript and AJAX.• Worked with the deployment of code using Jenkins.• Created backend tables/stored procedures and SQL for database access.• Installed testing and production environments and wrote test cases and documentation. • Extracted data from ERP systems to build complete dashboard with detailed financial KPIs.• Design web service and JMS interface to get data form customer SOA system