[2] Chowdhury worked for a businessman in Motijheel where he made connections in the business world and soon launched his own oil trading company.
[2] Chowdhury's business boomed after the government opened the oil industry to private investors.
[2] From 2001 to 2005, Chowdhury worked as the Chairperson of Green Delta Insurance Company Limited.
[3] Chowdhury was the managing director of Greenways Industries (BD) Limited, which was awarded land by Rajdhani Unnayan Kartripakkha during Bangladesh Nationalist Party government.
On 25 January 2008, he contradicted his initial statement to the police and claimed that his case was only against Sheikh Selim.
[15] Chowdhury sits on the Advisory Council of Government of the People's Republic of Bangladesh on Power, Energy and Mineral Resources.