Designed/developed and architected various parts of Enterprise level J2EE web application - aggregating data in various formats from various backend systems with millions of users. Provided innovative solutions to problems - recommended various approaches and their pros and cons - helped mgmt take a better path. Developed complex algorithm driven applications using Perl/C++ to solve unusal problems. Concentrate on externalizing business rules/content using tools, XML, etc - so that business users have better control of the application. Worked extensively with QA team(s) in creating test scenarios and in performance testing.