Siavash Shahshahani is a well known Mathematician of Iran. He has done a lot of research in the field of Mathematics and has published papers regarding his field. Currently he is the Senior Fellow of IPM and has been Professor at Sharif University of Technology since 1974. He is currently head of its Mathematics department.
He became the Deputy Director of Institute for Studies in Theoretical Physics and Mathematics-IPM, when Internet was introduced in Iran in 1994. Later he served as the head of IRanian Academic NETwork-IRANET, which works under IPM.
He served as Head of School of Mathematics from 1989 to 1994. He has also served as a Director of APTLD for two years from 2007 to 2009. He was a director of IRNIC, .IR ccTLD Registry left and retired from it in 2008.