Designed data models for real time securities processing system and associated data warehouse. Throughout the development life cycle, each data model proved to be efficient and complete, though flexible enough to accept any required changes. The real time system was proven capable of handling more than one millions transactions in an eight hour period. Designed and developed a complete interface using C and the Tuxedo API to connect three disparate trading systems in real time. Developed interest accrual and payment software for money market instruments. This software is currently in use by dozens of major financial institutions worldwide. Created Access applications involving forms, reports, complex queries, and VB modules.