10 May 2024 | Present

• Secretary of State, Ministry of Foreign Affairs and International Cooperation

23 October 2021 | 10 May 2024

• Undersecretary of State, Ministry of Foreign Affairs and International Cooperation 

2018 | 23 October 2021

• Ambassador Extraordinary and Plenipotentiary of the Kingdom of Cambodia to Japan

2017 | 2018

• Director General for  Asia-Pacific

2013 | 2017

• Director of Asia 2 Department  

2008 | 2013

• Deputy Director –General, ASEAN–Cambodia

2006 | 2008

• Deputy Director, ASEAN–Cambodia

2004 | 2006

• Chief  of Functional Cooperation Desk, ASEAN- Cambodia  

2000 | 2004

• First Secretary  (Royal Embassy of Cambodia in Australia)

1998 | 2004

• Deputy Chief  of Functional Cooperation Desk, ASEAN –Cambodia

1996 | 1998

• Official of  ASEAN – Cambodia

1991 | 1996

• Official, Department of Information and Documentation