In a rare case of rags to riches story, an Assamese entrepreneur today heads a trillion dollar company in the U.S. employing over 4,000 people. The man in the case is Siddhartha Chowdhary, the founder of Credence, a consulting organization based in Washington DC. An alumnus of IIT Kharagpur (1988-92 Batch) he was two terms president of PAN IIT activities for over 5,000 members