| Major Designation(s) | - SDM (Junior Scale): 1 October 1991 - 31 August 1992
- 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
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