[3][4] He also played active roles in diplomatic and UN missions, having served as the Chief Liaison Officer for UNTAG in Namibia (1989–1990) and the Acting High Commissioner of Bangladesh.
[5] Siddiqi grew up in Chittagong and moved to Lahore after completing his college studies.
He then served as SME and consultant for multiple international water research, law and order and development projects.
[12][13][14] Together they had a son Lutfey Siddiqi, a managing director of United Bank of Switzerland[15][16] and a daughter Husna Siddiqi who is an Executive Director at KPMG International, based in the Netherlands.
Siddiqi was diagnosed with cancer and was undergoing treatment at United Hospital in Dhaka until his death on 18 July 2021.