• Deputy Secretary (Junior Scale): 1 September 1992 – 31 July 1994
• Deputy Resident Commissioner: 1 August 1994 – 31 July 1995
• Joint Resident Commissioner: 1 August 1995 – 30 June 1996
• District Collector and District Magistrate (Gangtok): 1 July 1996 – 24 April 1998
• Deputy Commissioner (Gangtok): 1 July 1996 – 29 April 1998
• Private Secretary (Information & Broadcasting): 29 April 1998 – 30 June 1998
• Private Secretary (Personnel, Public Grievances, and Pensions): 12 November 1999 – 4 March 2003
• Deputy Secretary (Finance and Company Affairs Economic Affairs): 28 February 2003 – 6 August 2003
• Director (Finance and Company Affairs Economic Affairs): 6 August 2003 – 15 December 2003
• Director (Finance Expenditure): 9 January 2006 – 28 February 2008
• Director (Finance Economic Affairs): 29 February 2008 – 19 February 2009
• Joint Secretary (Finance Economic Affairs): 19 February 2009 – 8 January 2011
• Joint Secretary (Cabinet): 9 January 2011 – 8 February 2012
• Joint Secretary (Finance Economic Affairs, Washington DC): 25 July 2012 – 24 August 2015
• Principal Resident Commissioner (Joint Secretary), Sikkim House, New Delhi: 25 August 2015 – 3 August 2017
• Joint Secretary (Finance Economic Affairs): 10 August 2017 – 13 May 2018
• Joint Secretary (Home Affairs): 14 May 2018 – 17 September 2018
• Additional Secretary (Home Affairs), New Delhi: 17 September 2018 – 30 September 2021
• Secretary (Culture), New Delhi: 1 August 2021 – 14 August 2024
• OSD Secretary (Home Affairs), New Delhi: 14 August 2024 – 22 August 2024
• Secretary (Home Affairs), New Delhi: 23 August 2024 – 30 August 2025
• Indian School Certificate, St Francis’ College, Lucknow (March 1982)
• IIM Ahmedabad, Gujarat
• Post Graduate Diploma in Management from Indian Institute of Management, Ahmedabad, Gujarat (July 1986–March 1988)