Gauba, a 1982 Jharkhand cadre, had been serving as the Officer on Special Duty (OSD) in the Ministry of Home Affairs.
Gauba, 59, hails from Punjab and is a Physics graduate from the Patna University.
He has also represented the country in the International Monetary Fund (IMF) for four years on the Board.
Gauba has represented India on the board of the IMF for four years.
As the Union Home Secretary, he will be handling issues like the internal security, the militancy in Jammu and Kashmir and the Northeast, the Maoist problems in the Central and East India besides other issues.
Meanwhile, Subash C. Garg took charge as the Secretary for Department of Economic Affairs.
Garg, a 1983 Rajasthan cadre, will be succeeding Shaktikanta Das. He was working as the Executive Director in the World Bank. (ANI)