After getting his Ph.D. degree in Sociology in 1985 at the age of 29 from the University of Poona, India he worked for more than two decades with different national and international agencies like CIDA, DANIDA, World Bank, USAID, ADB, NORAD, CARE, Concern, BIDS etc. on rural development, rural poverty alleviation program, community participatory rural development programs, gender-inclusive development programs, social assessment, resettlement, good governance, HIV/AIDS and infrastructure development program. He is a registered consultant of Asian Development Bank (ADB). He is the founder of BISR and founder editor of Bangladesh Sociological Studies.

He worked as Senior National Expert for Water Resources Ministry, and Mission Member for CIDA. He also worked as an expert in Bangladesh, India, Nepal and Pakistan. Till January 2007 he worked as Team Leader of 23 study and evaluation projects sponsored by different national and international organizations.

He also organized and imparted training to 202 batches till January 2007, where 5452 participants attended those courses. Participants were from the senior and mid-level government officers, university teachers, local government representatives and development workers from government and non-government agencies in addition to some international experts. He offered courses on research methodology, PRA, people's participation, institutional development, participatory planning and health and family planning program management etc.

While serving in different organizations, he could develop some innovative ideas such as Canal Maintenance Group (CMG), People's Participation for Rehabilitation of the River Eroded Homeless People, Low Cost Canal Maintenance System, and a Method of Preparation of Needs Based Budget (NBB).

He has accomplished 9 research works and has 21 articles/review articles (16 peer reviewed), 3 published (peer reviewed) research reports, 8 books and 6 manuals as publication in his credit. Among the articles in three he made attempt to develop three theories where one is on government and politics, one on people's power in democracy and the last one on Muslim social stratification. Currently he is also editing an international journal titled "Bangladesh Sociological Studies - An International Biannual Journal" published by the BISR. He works as referee for some reputed journals.

He also worked as guest speaker in several universities and academic institutions such as Asiatic Society of Bangladesh, University of Dhaka, Shahjalal University of Science and Technology, BUET, Centre for Social Studies (DU) and Centre for Advance Studies in Social Sciences (DU). Also facilitated some national level workshop and seminars on different occasions.

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