Shri Debashis Sen joined the IAS in 1985. He graduated from Presidency College, Kolkata and got his post-M.Sc. Diploma from Saha Institute of Nuclear Physics. He got his Diploma in Public Administration from ENA, France. He has been trained at the JFK School Harvard University and IMF Institute, Washington D.C., USA.

Shri Sen has served in various capacities including District Magistrate for more than five years and Chief Electoral Officer for five years.

He is presently posted as the Additional Chief Secretary to the Govt. of West Bengal, Information Technology & Electronics Department and Chairman-Managing Director, WBHIDCO which is a government company that is developing New Town, Kolkata. He is also the Chairman of New Kolkata Development Authority (NKDA) and Naba Diganta Industrial Township Authority (NDITA).