Dr. Khan joined the Department of Applied Physics in University of Rajshahi as a lecturer in 1970 and retired as a professor in 2012.
He taught at University of Zambia from 1980 to 1982 and at Ahmadu Bello University in Nigeria from 1982 to 1984.
He conducted his post-doctoral research at Uppsala University (1990) and Tsinghua University (1992).
He also worked as a researcher at International Centre for Theoretical Physics and Brunel University London (with EEC fellowship).

He served as the 17th vice chancellor of University of Rajshahi during 1999-2001.
Prior to this he also held position as the pro-vice chancellor, member of the senate, member of the syndicate and the chairman of the 'Department of Applied Physics and Electronics' at the same university.

As a member of the Bangladeshi delegation, he played an important role in the declaration of February 21 as the International Mother Language Day by UNESCO in 1999, in Paris.

He served as the High Commissioner of Bangladesh to UK and Ambassador to Ireland from 2009 to 2012.

Currently, he is working as an adviser at Varendra University.
Dr. Khan joined the Department of Applied Physics in University of Rajshahi as a lecturer in 1970 and retired as a professor in 2012. He taught at University of Zambia from 1980 to 1982 and at Ahmadu Bello University in Nigeria from 1982 to 1984. He conducted his post-doctoral research at Uppsala University (1990) and Tsinghua University (1992). He also worked as a researcher at International Centre for Theoretical Physics and Brunel University London (with EEC fellowship).
He served as the 17th vice chancellor of University of Rajshahi during 1999-2001. Prior to this he also held position as the pro-vice chancellor, member of the senate, member of the syndicate and the chairman of the 'Department of Applied Physics and Electronics' at the same university. 
As a member of the Bangladeshi delegation, he played an important role in the declaration of February 21 as the International Mother Language Day by UNESCO in 1999, in Paris. 
He served as the High Commissioner of Bangladesh to UK and Ambassador to Ireland from 2009 to 2012.
Currently, he is working as an adviser at Varendra University.
M. Sayeedur Rahman Khan