Mahmud has been working as a photographer since 1988, assigned mostly by the development agencies and private sector in Bangladesh, Nepal and the United Kingdom. He also engages on self-assigned projects on social issues that usually lead to the photo books.
Mahmud's photo publications include:
Our World - Bangladeshi Women
River Life: Bangladesh
20 Villages: Kurigram
Ang Ing Mru Rung - Life and Struggle of the Mro People in Bangladesh
Every Day is Another Day
He is one of the founder members of Map Photo Agency since 1993. Mahmud lives in Dhaka and working on his latest photo research on Food security, Population and Climate Change at present.