• Implemented REST API Endpoints for the efficient manipulation and auto-discovery of library resources in an Agile test-driven environment• Designed batching REST API calls into a single call to improve the performance

• As a Java developer of back-end of the Real Estate application MyZap.com, was involved in building of the most trafficked realty brokerage website in the country.• Designed and implemented critical modules such as: mobile integration with REST endpoints, location geocoding with Google Geocoder, integration with Zimbra Collaboration platform, transaction feed for Coldwell Banker Vanguard, and email/SMS notifications.• Redesigned ZapScore, an application which predicts probability of client buying a home and compares against historical data on home purchase, which resulted in an improved agent/client interface and helped with Real Estate transaction monetization.• Integrated user identity management functionality with Atlassian Crowd via RESTful methods.• Used UML, IntelliJ, JDK 1.6, Hibernate, Spring MVC, Oracle, Tomcat 6/7, JSON, Subversion, Jira, FireBug, Zimbra, Google Geocoder

• As back-end developer of eBay Classifieds Group maintained Java-based Global online classified advertisement application. Resulted in enhanced user experience. • Developed multiple server-side API for a variety of mobile apps as interface for the classifieds domains in a Restful style.• Designed and implemented key modules, such as Payment module payment processing that features interaction with WorldPay, resulted in improved app monetization.• Extended application components that interface with Google Analytics to bring more accurate reports of the app usage.• Actively participated in code reviews.• Used UML, Eclipse, JDK 1.6, Oracle, Tomcat, GitHub, JSON, Jira, FireBug, FreeMarker, RESTClient, Jenkins, Zillow XML

• Developed, enhanced and maintained new features for Blackboard’s Learn product line (web application for the e-Education market), including content management solutions. Involved in unit testing and code reviews in agile (Scrum) environment• Designed and implemented critical component of the learn management system that allow to align education standards, objectives and goals to the course content item or course object. Developed both API, as well as UI for the component. Participated in code reviews.• Created the interaction diagrams of the main components, that involved in the product line.• Used UML, Eclipse, JDK 1.6, SQL Server, Tomcat, DASL, Perforce, Ant, Jira, Crucible, JUnit, Sonar

· Maintained server-side components that published Web Services inside Java-based 24x7 high-volume (25 million transactions daily) application which provides a variety of account related business services exposed via XML interfaces. The financial product is using layered approach for providing transactional services and allows for a hierarchy and aggregation of services to meet multiple business functions.· Took part in producing the application component requirements together with business analysts.· Used Eclipse, Web Services (Axis, SOAP), ClearCase, ClearQuest, XSD, XMLSpy, Ant

· Developed the data conversion module and extended report functionality for the online education internet application. Conceptually designed the report framework. The application, that developed for Pearson Education, provides evaluation and course management tools for instructors and students to monitor student progress. UML, Eclipse, Hibernate 3, Tomcat 5.5, SVN

· Architectured and designed the Report Component, metadata-driven configurable(XML) component that unified GUI across different applications. The project features analytical (OLAP cube, dimension/measure) data display and data prototyping. · Designed and lead development of the Contract Rebate Administration, an intranet finance J2EE-based application which automated the invoicing, dispute resolution, and analysis of millions of Kaiser's pharmaceutical vendor rebate claims. Performs mining, analyzing and processing large amounts of vendor data. · Maintained and refactored the legacy intranet application that monitors pharmacy drug initiatives and views patient prescription information. The application provides data and trending analysis with customizable charts and automatic data export with reports emailed to users.· Designed and developed analytical application which evaluates ordering practice patterns for radiology resources· Designed and implemented a tree-structured parser and data interface engine consisting of visual data browser and code generator in order to port legacy Windows applications to HL7 (healthcare industry protocol).· Used UML, Eclipse, Struts 2, Spring Framework 2.0, WebLogic 9.2, Hibernate 3, Web Services (Axis, SOAP), Ajax, Oracle, PL/SQL, JFreeChart, DisplayTag, POI/MS Excel, VSS for the design

Setka Inc. / University of California, Office of the President (http://www.ucop.edu), Oakland, CA • Maintained and re-factored the Pathways, University's online admission application (http://www.universityofcalifornia.edu/admissions/undergrad_adm/apply/apply_online.html).• This internet based application helps students apply for admissions to one or all 9 UC undergraduate campuses and enables admissions directors to download the data directly into their systems.• The product is multi-tiered high-volume (100,000 users) web, J2EE-based application.• Used JDK 1.4, WSAD/Eclipse, J2EE (JSP, servlets), Spring Framework , iBATIS, JDBC, WebSphere 5.1, Sybase, SQL, Ant, CVS for the development and deployment.

Managed a product from a concept to release. The product is intended to be a facade infrastructure of about 50 server-side bioinformatic and drug discovery products. Application is based on J2EE technology, using UML for software design.· Led both internal and offshore product development from the company’s U.S. headquarters.· Produced business and functional requirements, technical architectures, deployment and post-deployment planning.· Architected, designed and developed key components.· Integrated application with legacy products.· Addressed issues of performance, scalability, reliability, extensibility, manageability and security.· Used UML, JDK 1.4 (JBuilder X), J2EE (EJB, JSP, servlets), JDBC, DHTML, WebSphere 5.0, Oracle 9, SQL, JUnit, Ant, ClearCase for the design, development and deployment.

OneRelease (http://www.onerelease.com) acquired by Manugistics), Pleasanton, CA· Designed Import Manager as a server-side component of Allocation Optimizer. Based on J2EE tiers and patterns. Used UML (Rational Rose) for software design. Application consists of tree-structured set of server-side processes. Designed use cases, activities, states, objects and components. Modeled Allocation Optimizer database (Oracle) schema into object architecture.· Lead, designed and developed key modules of Peer-to-Peer Administrator such as Connector, Session Manager and Logger. Most components implemented as EJBs, running under WebLogic (6.1) application server and exchanging XML messages. Presentation tier uses JSP.· Designed and developed XML-based metadata verifier that compared database metadata to class definition using model XML file. This verifier reports discrepancies between metadata and class definition. Product runs using 3 inputs: given SQL-script or stored procedure, Java classes (using reflection API) and model XML file.

Kaiser Permanente (http://www.kp.org), Oakland, CA · Led and developed a web-based (servlets) multi-tier medical information system, key component of Kaiser Permanente Online (http://www.kponline.org). Server-side architecture included distributed CORBA objects. This process used Java/Jbuilder, Netscape Web Server (Suitespot), CGI, VisiBroker 3.2 and Oracle 8. · Designed and implemented a tree-structured parser and data interface engine consisting of visual data browser and C++ code generator in order to port legacy Windows applications to HL7 (health care industry protocol).

· Collaborated on design and implementation of the key features of Windows software, used for the distribution, search, retrieval, and archival of CAD-related information, via CD-ROM using VC++ 4.x and OMT (Autodesk PartSpec and DesignBlock).· Designed, prototyped, and implemented Database-to-HTML converter (using VC++ 4.x) to translate database of mechanical parts information and hierarchy of images and text files into ~600,000 static and mutually linked HTML files. Received an award for exceptional performance in the project.