Developed and was involved in analysis and design of PMR, DashboardWS, CronWeb JEE applications for medical center domain, designed and implemented Audit, Birt Engine, Patient Transportation modules.

Developed an automated tool (DAW) that allows for prompt identification of a patients diagnoses which can be sent to physicians directly with ICD-9 codes and a guideline-based assessment/plan attached. The Engine determines the diagnosis recommendation based on available clinical data and provides several choices for the provider.

• Developed Spring MVC controllers, JQuery UI libraries: auto complete, jquery UItable, used JSTL tag library, developed custom tags, JQuery AJAX API.
• Used Hibernate annotations, one to one, many-to-one, one-to-many, many-to-many associations.
• In order to log medical audit entries used Hibernate Interceptor, Spring AOP.
• Used Google mapping API for patient transportation tasks.
• Designed BI reports, used Birt report engine, developed MySQL stored procedures.
• Used ORM Hibernate for mapping Entities: one-to-one, one-to-many, many-to-many, cached data using EHCache.
• Integrated Spring and Hibernate frameworks, used HibernateTemplate.
• Used Spring security framework for user authorization and authentication, implemented 2 factor authentication security flow, designed access and permission security levels.
• In order to schedule cron jobs used Quartz schedule job framework, designed TaskManager abstract layer for that, implemented CronTriggers.
• Created Spring MVC – REST based JSON Services, used RestTemplate for making a client call to JAX-RS webservices.
• Implemented spring security authorization and authentication for JAX-RS webservices, used tokenized pattern.
• Implemented session facade, business delegate, service locator, DAO, factory, MVC, abstract factory design patterns.
• In order to process medical documents used aspose and itext pdf libraries, converted documents into PDF format.
• Created WSDLs, XSDs, used SOAPUI and XMLSpy, HTTP Analyzer.
• Used JMeter as a load testing tool for analyzing and measuring the performance of a variety of services.
• Used JUnit test framework for a unit testing.
• Used Maven profiling for QA, Preprod application build, configured JBoss AS 7.1, provided a production support.

Environment: Eclipse, Spring 3, Spring MVC, security, AOP, JQuery, AJAX, MySQL, TOAD, Hibernate 3, Maven, Birt Report Engine, JAX-WS 2.1 and JAX-RS 1.1, JMeter, JUnit, SoapUI, Java 6, JUnit, JBoss AS 7.1.

Developed Auto registration Single Connect Service Order, Bidder Maintenance applications for fpl.com.

Integrated SAP, Mainframe systems into Java based application: fpl.com.

Supported applications such as Pay by Internet (PBI), Account Management, Account Info, ECA and REA.

• Developed Action, DispatchAction, ActionForm & DynaActionForms classes, struts-config and web XML configuration files, used Struts tag library, developed dynamic Action forms, Indexed Properties, Mapped Properties, Dynamic Indexed properties to develop JSP view components, created tiles and XML def for tiles, used some validation struts features.
• Used Spring framework features such as Spring MVC, AOP, IoC, Spring DAO
• Developed Data Access layer using Spring DAO and SAP JOC connectors
• Created business layer: J2C connectors to CICS Mainframe server.
• Used JQuery library for asynchronous calls from a browser to server, used JSON format for AJAX calls.
• In order to generate dynamic PDF reports used iText library, converted html into PDF.
• Used JSTL, struts tag libraries for development of GUI components
• Created SOA layer between client side and J2C connectors to CICS Mainframe server, used JAX-RPC SOAP specification.
• Configured RAD 7.0 – data sources, J2C connectors, environment variables, XML descriptors, server profiles.
• Used JAXB 2.0 for a Web Service payload components.
• Developed JAX-WS / JAX-RS web services
• To develop persistency and mapping in beans to metadata used Hibernate 3.2, annotations, one to one, many to one, one to many, many to many associations.
• Created Unix Kshell / Perl scripts for application statistics: usage of Mainframe connectors in all applications (over 140 apps).
• Integrated SAP SCM into fpl.com, created JCO connectors for SAP – ABAP / RFC call.

Environment: WebSphere 6.1, RAD 7.0, J2C CICS, SAP JCO, SOA, Struts, JQuery, Ajax, XMLSpy, Oxygen, JAXB 2.0, JAX-WS, JAX-RS, XMLSpy, Oracle 11g, Hibernate , Kshell, Perl, Unix, SOAP UI, Spring 3.X : Spring MVC, Spring DAO, Spring IOC and Spring AOP

Developed J2EE MSM SOA application for hospitality industry. Implemented Premier Service Router design pattern. The external application (Mobile iPhone) sends a request message. The request message is addressed to the service's external interface on the perimeter service router. The perimeter service router typically "hides" the internal endpoint address by accepting requests through an external endpoint address that is exposed to external applications. Created JAX-WS web services based on SOA architecture, clients to these services, REST web services.

• To modify original request from external application used SOAP Handlers, JAXP DOM API.
• Developed ADF Rich Faces components, ADF task flows, used JSF / ADF bindings.
• As JPA layer used App module, Entity and View objects
• To make iPhone Application scalable and flexible created Configuration API, created JAX-WS web services for that.
• Developed custom XPath functions to transform messages
• Implemented Exception Handling for the BPEL Process models to handle System, Business exceptions and used Compensation handlers to handle the transaction if an exception occurs
• Extensively used BPEL to determine dynamic partner link calls, updating, generating proxy stub classes to call BPEL process from a web application, etc
• Configured SSL / HTTPs transport layers, added security features such as X.509 certificates, generated and configured keyStores for that.
• To develop GUI API used Oracle ADF framework, developed JSF rich components.
• Created stored procedures, ref cursors, used PL/SQL API, made SQL queries efficient, performed SQL tuning.
• Created WSDLs, XSDs, used XMLSpy, HTTP Analyzer.
• Developed Action, DispatchAction, ActionForm & DynaActionForms classes, struts-config and web XML configuration files, used Struts tag library, developed dynamic Action forms, created tiles and XML def for tiles, used some validation struts features.
• To develop Msm Logging functionality used Aspect Oriented Programming concepts.

Environment : Oracle SOA Suite, Oracle BPEL, JDeveloper 11, ADF, Java 1.6, Oracle 10g, TOAD, PL/SQL, Struts, JAX-WS, JAXB, JAXP, XML, XMLSpy, HTTP Analyzer, Oxygen, Spring, AOP, JQuery, JSF, REST, EJB3.

Developed J2EE mortgage application for Washington Mutual bank, implemented user identification and authorization, basic loan information history and order credit modules, used Web Services, Spring as a bean manager container and Hibernate as ORM mapping technology, implemented JMS architecture for a credit order.

• Developed user security functionality, used LDAP and JAAS, struts, tiles, created Session filter for session expiration and some security application features, used Digest-MD5 authentication.
• Mapped Sun One LDAP Active directory operations to Java JNDI APIs.
• Coded and implemented PL/SQL packages to perform Application Security and batch job scheduling.
• In DAO used ref cursors, callable statements. In order to update / select values in database created stored procedures used PL/SQL.
• In order to validate user entry developed custom tag library.
• Implemented session facade, business delegate, service locator, DAO, factory, VO, MVC design patterns.
• Created broker authorization Web Services, used Axis framework, generated WSDL for a Web Service client proxy.
• Used Spring framework for a developing business DAO object, implemented inversion of control and Aspect-Oriented Programming principles.
• In order to develop persistency and mapping in beans to metadata used Hibernate 3.2, annotations, one to one, many to one, one to many, many to many associations.
• Configured RAD 6.0 / 7.0 – data sources, factory queue / queues, environment variables, XML descriptors, server profiles.
• Using Java Mail created the Email classes; Log4J  was used for journaling of events.
• Developed Message Driven EJB ( MDB ), used JMS architecture, MQ Series library for importing orders from the Oracle Interface tables
• Used struts and local object for application internalization.
• In order to secure data in the database used encryption algorithms.
• In order to implement business logic created EJB - stateless session beans, servlets, configured ejb-jar.xml
• Optimized SQL queries and stored procedures, created efficient code that optimizes speed and CPU use.
• Developed Action, DispatchAction, ActionForm & DynaActionForms classes, struts-config and web XML configuration files, used Struts tag library, developed dynamic Action forms, Indexed Properties, Mapped Properties, Dynamic Indexed properties to develop JSP view components, created tiles and XML def for tiles, used some validation struts features.
• Created unit test cases, used and configured TestNG framework, used TestNG annotations.
• Developed dynamically generated presentation tier of J2EE Patterns (GUI) using HTML, DHTML, JavaScript, CSS, XML, XSL, XSLT.

Environment: SQL Developer, RAD 6.0 / 7.0, WebSphere 6.1, XMLSpy, CVS, HTML, TOAD, J2SE 1.5, JSP, Servlets, Spring, Struts, log4j, Hibernate 3.2, Web Services, Axis, SOAP, TestNG, JMS, EJB, Oracle 10 g, DB2, Windows XP, Linux, Unix, Ajax, WSDL, Eclipse.

Developed and supported enterprise SCM (Catalog management) application for online item (like music, ringback tones) searching, shopping, downloading / uploading functionality. Implemented shopping cart functionality: add, delete, checkout, submit, view, used Hibernate as ORM mapping technology, implemented JMS architecture for a billing and order system.

• Implemented session facade, business delegate, service locator, DAO, factory, VO, business delegate, MVC design patterns.
• In DAO used ref cursors, callable statements. In order to update / select values in database created stored procedures used PL/SQL.
• In order to implement business logic created EJB - stateless session beans, servlets. Created stored procedures with dynamic ref cursors, oracle collections.
• To implement asynchronous messages created message driven beans, used JMS, MQ Series.
• Used ORM Hibernate for mapping Entities: One to One, One to Many, Many to Many.
• To convert vendor XML files into Verizon XML schema created XML converter, used StAX API, Parsed input XML vendor provided data and formatted export data into VZW XML schema
• To pass parameters from middle tier to front end - used JAXB (marshalling classes / unmarshalling XML schema), generated XML file.
• Configured RAD 6.0 – data sources, factory queue / queues, environment variables, EJB JNDI names, XML descriptors, ejb-jar.xml descriptor file.
• Implemented high performance algorithms for data processing and analysis like quick searching and quick sorting.
• Created C shell, Perl wrapper script, which started Java, Oracle PL/SQL Backend processes.
• Generated SQL and PL/SQL scripts to install, create and drop database objects including: tables, views, primary keys, indexes, constraints, packages, sequences, grants and synonyms.
• Used ODBC data connection to transfer data from Excel & Access to Oracle database.
• Optimized SQL queries and stored procedures, created efficient code that optimizes speed and CPU use.
• Configured log4j for multiple log files.
• To develop persistency and mapping in beans to metadata used Hibernate.
• To communicate SCM with a billing system created web services.

Environment: TOAD, WSAD 5.1, RAD 6.0, WebSphere 6.0, XMLSpy, MKS, ClearCase, J2SE 1.5, JSP, Servlets, EJB 2.1, PL/SQL, StAX, log4j, JMS, Hibernate, Web Services, SOAP, WSDL , Hibernate, MQ Series, JAXB, Oracle 10 g, Windows XP, Unix Sun Solaris, Perl, Eclipse

Provided support and troubleshooting for financial-report application of Putnam investment company located in Boston.

Created SLA (Service Level Agreement) Tracking Tool, which keeps time track of autosys jobs which are running to maintain the life cycle of Vision database. The application consists of 3 parts:

1) Backend Daemon Java Process - for updating Oracle database with the information about autosys jobs. The daemon consists of 2 parts managed by separate Autosys jobs: first process runs soon after midnight, and the second process starts after the first one succeeded and runs every 10 minutes.

2) SLA Web – for output of updated by the daemon database in the browser (based on Struts framework)

3) Charting Service (J-Chart Java component). The server provides charting services to clients through web services. Jakarta Axis framework and its implementation for SAAJ (SOAP with Attachment API for Java) are the building blocks for the web services implementation. A client’s request is a HTTP/SOAP request, which contains both charting data and chart/graph specifications; the corresponding HTTP/SOAP response contains chart images, which are implemented as SOAP attachments. A client generated an XML file containing charting data and specification according to Sitraka’s DTD.

• Made database design, created stored procedures.
• To update & call Stored procedures / functions from Java beans used callable statement
• Created graphical reports, used J-Chart Java component, created Java client to generate an XML file containing charting data and specification according to Sitraka’s DTD
• Developed java beans, servlets, JSPs, java scripts.
• Configured project in Eclipse environment: class path, project properties and references, ant build scripts, debugging environment.
• Developed Action and ActionForm classes, struts-config and web XML configuration files, used Struts tag library, developed dynamic Action forms.
• To develop persistency and mapping in beans to metadata used Hibernate framework.
• Using JNDI, LDAP, NTLM created user authentication for Sun One Directory LDAP server.
• Created C shell wrapper script, which started Java Daemon Backend process.
• Developed basic graphic images like icons, used Adobe Photoshop.
• To deploy web application used Ant, created build.xml configuration file.
• Using SQL*Loader, Korn Shell, C Shell & Autosys jobs automated Oracle updates.
• To test application created test cases, used JUnit framework.
• Provided support of autosys jobs for Vision database.

Environment: JBoss, Tomcat 5.0.28, WebLogic 8.1, Eclipse 3.0, MyEclipse, Ant, TOAD, CVS, J2SE 1.4, JSP, Servlets, Java Beans, Struts 1.2, Java Script, HTML, PL/SQL, JAXP, SOAP, XML, C-shell, Korn Shell, SQL Loader, J-Chart, Perl, AWK, Adobe Photoshop, Oracle 8i, Unix Sun Solaris, Windows NT.

Developed J2EE financial – budget application for Ontario Ministry of Health: Schedule B – Programs & Services, Monthly Payment Schedule, provided support to MIS, Remedy system, CHC ‘Homeless’ Management Information System, CHC Budget and Financial Reporting System

• Developed database authorization, checking constraint triggers, stored procedures.
• To update & call Stored procedures / functions from Java beans used callable statement, passed java Objects (arrays) to stored procedures.
• Developed java beans, servlets, JSPs, java scripts.
• Implemented Factory design pattern for DAO objects.
• Created multiquery, tabular, group left, parameter Oracle / Crystal Reports with web and paper layouts. Based on web layout generated JSPs and to modify the view of jsp used Oracle taglib library. To generate pdf / html format reports passed parameters from JSPs / servlets to Oracle Report Server. Created keymap file configuration for Oracle Report Server.
• To make the application compatible in all browsers reloaded the prototype – outerHTML property through getter and setter methods.
• Developed GUIs using Struts framework. Developed Action and ActionForm classes, struts-config and web XML configuration files, used Struts tag library, Indexed Properties, Mapped Properties, Dynamic Indexed properties to develop JSP view components.
• To make dynamic budget components created XML file / XML descriptor with description of components, used XML parser to read XML document.

Tools / IDE: Tomcat 4.1.29, Eclipse 3.0, Oracle Reports Builder 9i, Ant, TOAD, XMLSpy, BI Query, Crystal Reports 9.

Tech: J2SE 1.5, JSP, Servlets, Java Beans, Struts 1.2, Java Script, HTML, PL/SQL, JAXP, XML

Databases: Oracle 8i, 9i.

OS: Windows XP.

Developed inventory, payroll, client-server application for Ukrainian sale company.

Analyzed the company’s existing manual accounting system. Developed the proposed system and made a parallel run with their existing system until the output was satisfactory to the users and the owner. Responsibilities included the design, coding, testing, implementation and maintenance of the accounting system based on the functional requirements of the company accountant. Created reports such as Income Statement reports, Profit and Loss reports, Balance Sheets reports, Inventory reports and other reports that the owner or company accountant desires.

• Developed various forms for the application with user validations in Developer 2000 and Forms6i.
• Involved in security menu design, screen layout, screen design.
• Implemented complex features such as "Single Master and Multiple Details" using stacked canvases and alternate regions.
• Involved in writing generic routines to display the toolbar, changing the colors for insert/query mode, error handling with error messages, standard look and feel.
• Created templates, object library, new PL/SQL library routines, visual attributes, Generic LOV'S and property classes.
• To perform the object equivalent of remote procedure calls used Java RMI API.
• Involved in SQL statement tuning for multi table joins by using hints
• Generated Weekly Graphical reports with Reports 6 / Crystal Reports to analyze weekly transportation budgets/costs.
• Developed database triggers in Oracle 8i PL/SQL to provide auditing and security features in the application.
• Loaded data into excel using Oracle database through Dynamic PL/SQL, using built-in packages such as UTL_FILE package.

Environment Developer 2000, (Forms 6i), PL/SQL, HTML, Pro-C, Crystal Reports, Java, JSP, Java Servlets, WebLogic 7.1, JBuilder, Crystal Reports, Oracle 8i, Windows 95