J2EE development supporting web and back-end applications for CMS (Medicare and Medicaid). Public-facing web application providing enrollment statistics and on-demand health-care data. Back-end Java application supports mediation and resolution between vendors and agencies regarding enrollments and benefit requests. Development resources include Apache, JBoss, Oracle, UI - JavaScript, Html5, JQuery, CSS, supporting Big Data apps and environments

• Supporting CDC and FDA developed core-Java and database code supporting data analysis and production applications for vaccine inoculation and public health oversight for CSRA.

• Supporting the National Cancer Institute developed back-end and front-end fixes for Patient Registration Restful web application interfacing to vendor-provided health and diagnostic web application using custom API, Spring Framework, Hibernate, J2EE Java, JSP, JavaScript, JQuery, Ajax, Bootstrap CSS for Leidos Biomedical.

• J2EE development supporting web and back-end applications with Agile Methodology.

• The web application provided enrollment statistics and on-demand health-care data.

• Enhanced back-end Java application supporting reconciliation of enrollments and benefit requests, using JBOSS 7, Oracle, JavaScript, Html5, JQuery, CSS. Built VMWare client side environment for Big Data application using Hadoop, Spark, Ubuntu Linux, Maven.

• Developed and enhanced Java web application using Spring, Hibernate, Oracle 11g supporting Medicare and Medicaid customer/contractor acquisition and management (acquisition, rating, review, evaluation, awarding, etc) activities; Involved in full-stack, data and app tier development supporting evolving needs.
• Development included Java J2EE 6-7 using Restful web services, Hibernate, POJOs, Spring MVC, and Struts 2.0 with Oracle 11g backend, Eclipse, Ant, and Subversion.
• Performed unit test by stubbing. Developed Oracle, Hadoop, Linux code to handle big data.
• Represented team in Scrum sessions supporting various Big Data applications.
• Assisted with trouble-shooting Big Data applications using Hadoop, MapReduce, Marklogic.

• Developed Java J2EE back-end code using Struts 2.0, Spring JDBC, Core, and Oracle 11g to convert customer account management from C/C++ to make the application functional and conforming.
• Reverse engineered billing and customer account management applications to support bug fixes and compliance with distributed components.
• This followed Agile Scrum with short timeframes.

• Developed Java Restful web application for status reporting using Struts, Tomcat, Hibernate, JSP, Servlets, and Oracle 11g, Rational Software Architect for WebSphere, to include JMS and knowledge-base components.

• Developed server application to diagnose external access of Patent and Trademark databases using Plsql, Shell Scripting, Perl that became customer mainstay. Troubleshot Java and dot Net USPTO trademark and patent applications.

• Supporting TSA as a software developer, developing fixes and enhancements to hiring management subsystems utilizing Oracle 11g and ASP.Net technologies, in Agile environment, using Visual Studio, Toad, ClearCase, ClearQuest, SharePoint
• Developed Sequence Diagrams and Class Diagrams supporting FBI Next Generation Investigative (NGI) web application which supported billing, maintenance of subjects’ investigative information, biometric information, and interfaces with external systems. Used IBM Rational Software Architect/Modeler, ClearCase, and ClearQuest.
• Developed web-based system task monitoring application using PHP and MySql to run, schedule, audit, and monitor customer’s data center applications on Windows and Solaris using Restful and Ajax. Also developed asset and repair/obsolescence reporting apps with Microsoft Visual Studio, ASP.Net 3.5, and C#.
• Developed Java code implementing feature for user update and display of EPA catalog of chemical and biological substances.
• Implemented extensive validation functionality, multi-threading capability using Java J2EE in Struts MVC Framework. Developed all supporting and related functionality on all tiers from user-interface tier to DAO database access tier, allowing use of Microsoft Excel or XML user input files to be scanned, validated, processed to update Oracle 10g database.
• This feature was integrated into modernized Java Struts menu-based substance public web facing reference and research product developed by the team for the EPA. Technologies used included Tomcat, Oracle Application Server 10g, Apache, EJB, JDBC, XERCES, DOM, JAX-P, Ant, and Eclipse.
• Tomcat server used for local deployment and testing and deployment to Oracle Application Server 10g was used for release to production.
• Development also created downstream functionality utilizing SOAP APIs.
• Developed web-based Oracle reports for environmental data registry using Oracle 9i Reports and enhanced Oracle 10g web forms menu to integrate with Oracle Portal.
• Development tools included Eclipse, Ant, Tomcat, Apache, Oracle Application Server, Serena, and Toad.
• Knowledge and exposure of Hibernate, Spring. Developed Oracle 10g PL/SQL packages for data migration to new schema supporting new J2EE architecture, raw data validation, and database load for redesign of database-centric research application.
• Modified Oracle web applications for EPA web pages using HTML, JavaScript, Oracle PL/SQL web built-ins.
• Added DML and DDL within Java validation code for EPA web substance application using Oracle 10g and Oracle Application Server 10g.
• Debugged newly deployed Oracle Portal EPA web applications.
• Developed Perl and Linux scripts supporting the DBA.

• Developed Oracle Forms and Report for Oracle 10g supporting new requirements and enhancements for transport and forecasting application for Military Surface Deployment and Distribution Command, including PL/SQL, Unix Shell, and ASP.net on Linux/Solaris.

• Developed ETL for data warehouse for wireless billing using Oracle 9 and 10 PL/SQL with Unix Shell Scripting on Linux and AIX.

• Developed front-end interface to Oracle using Forms 6i on Oracle 9i database. Developed PL/SQL supporting DoD Java web-based forecasting and trend analysis application, redesigned Oracle 9i database for new business requirements and workload, developed metadata applications for validating and transforming to a new database schema, and applications to dynamically regenerate database schema, data dictionary. Functioned as software tester supporting compliance and integration for DoD DISA.

• Developed Oracle 9i PL/SQL procedures to generate business rules in XML automating IRS tax-exempt application, also developing integration and test functionality.

• Developed server-side applications in Unix Shell, Perl, PL/SQL, Oracle SqLoader, and other built-ins for retrieving, processing, integrating distributed customer data.
• Enhanced Integrated Data Environment for DoD; server development for JTAV, NLAC, and JMAR Projects.
• Developed data-mart using MS T-SQL for IRS SB/SE.