Krishna will take charge as the chief secretary on January 1, 2020.
He is presently the additional chief secretary in the Home, Political, Revenue & Disaster Management, Information & Public Relations and Printing & Stationery departments.
Kumar belongs to the 1984 batch IAS officer of Assam-Meghalaya cadre.
He was also the Deputy Commissioner of undivided Kamrup district.
Kumar, under deputation, also held important portfolios in the central ministry.
Kumar is known for his able leadership qualities and at a time when the Assam is going through a tough situation, a lot is expected from him.