# Developed a Unix server program to calculate charges for client programs running on Windows. The program is used when customers redeem coupon-style certificates or points. A variety of business rules are applied based on the requested merchandise and account. The server also charges one or more customer credit cards to complete the transaction. # Developed a network using Jabber to emulate radio communications between airplanes and ground systems. The system connected multiple desktop computers to emulate different airplanes in a combat group. # Created a multi-threaded XML database. The database included an API that allowed local programs to make real-time updates and a SOAP API for use by remote applications. The system was written in standard C++ to provide portability between Windows NT/2000 and Solaris. # Developed a database library similar in purpose to ODBC. The library allowed SQL calls to be embedded into C and C++ programs and included a C++ class framework for da