Designed and implemented a client/server systems for financial companies. Designed and improved large and small databases for financial companies. Designed and coded a web based system for broker daily trades' summary statistic reports. Designed and coded a web based system to update and correct user data. Analyzed and designed a Sequence Processing and Electronic Distribution System to store, retrieve, and manipulate experimental data. Developed Core data transfer Objects for data transfer System using Perl and HTTP/HTTPS technology. Design and enhanced web based admin system using Perl/CGI and Oracle 9i. Developed a Core Perl classes for batch processing and data manipulation processing using Perl. Developed and enhanced data movement, system health and performance monitoring system using perl. Designed and developed Oracle/SQL server triggers and stored procedures to handle data manipulation on backend.