Improved stability of integration solutions by constantly resolving sophisticated business logic errors between multiple connected applications. Implemented, moved to production and provided support for tens of ecommerce integration projects between WMS, ERP, IMS, OMS, Payment gateways, Loyalty Reward and other ecommerce systems.Migrated an integration project from BizTalk solution with improving performance and reliability in multiple times by using multithreading and batch implementation.Engaged in proposition and implementation of continuous integration infrastructure across integration projects.Participated in gathering requirements, communication with customer and clarification of business logic details.Enhanced availability of application by implementing a load balancer between application instances. Improved stability of applications by eliminating memory leaks. Implemented an integration solution to provide a resilient, reliable delivery and processing of messages.Successfully designed, implemented and delivered to production a tool to validate and correct big XML files if they are corrupted or invalid.A payment gateway Integration project – designed project from scratch and delivered to production. After some short maintenance period the project worked for years without issues.

www.lexaden.comResponsible for creation and implementation of innovative ideas in Lexaden Platform

Responsibilities: Software development (front-end, back-end, business logic development), code reviews, mentoring of junior developers.Achievements: Improved architecture of the application by introducing a new Façade layer to keep logic in actions as simple as possible. Improved performance in several times for several modules. Added drag-n-drop for a scheduling module in order to improve usability. It becomes possible to use one drag-n-drop to schedule a section of a teacher instead of using 8 clicks in the previous version.

Achievements: Significantly improved application performance at the system startup. Simplified deployment procedure of the application. Found a simple and original approach to fix a very complex bug in the system.Responsibilities: Software development (front-end, back-end, business logic development), architecture design of the application, creation of UML documentation (Enterprise Architect 7.5). Technologies: Spring framework, Oracle, Quartz, Xalan, XSLT, JSTL, JSP, Ant, Maven 2, Tomcat

Participated in development of various software projects for such companies as EMC inc. (www.emc.com), Perceptive Informatics, Inc.(http://www.perceptive.com/)Achievements: Identified and improved performance of a system module in a factor of 10 for the Perceptive Investigator project. Developed an Installer to simplify the deployment process of the customized software. Found, proposed and implemented in the project a ready and powerful ETL solution. Gained a good work experience with the distributed development team.Technologies: Spring framework, Hibernate, Oracle Database, Struts 1.1, Mule Open Source ESB, Liferay, IBM WebSphere portal.

Participated as a Java developer in the following software projects: Mondrian based OLAP prototype (Web application) and Jasper (Web OLAP application).Responsibilities: Front end (JSP, MVC framework), back end development(XML file as storage)Technologies: Java OLAP API, IntelliJ IDEA, ORACLE, TOAD, CVS, Struts, Hibernate, JavaCC, Servlets, JSP, JDBC, Tomcat, Mondrian OLAP Library