July 2023 | Present

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

February 2020 | June 2023

• Ambassador Extraordinary and Plenipotentiary to United Kingdom (Residence), Denmark, Finland, Norway, Sweden, Ireland

April 2018 | July 2020

• Secretary of State of the Ministry of Foreign Affairs and International Cooperation 
• ASEAN-Cambodia SOM Leader
• Cambodia's Representative to the Steering Committee of ARMAC  

July 2015 | July 2018

• Under-Secretary of State of the Ministry of Foreign Affairs and International Cooperation 

Sept. 2015 | July 2020

• Cambodia’s ARF Expert and Eminent Persons (EEPs)

14 Jan. 2009 | June 2015

• Ambassador Extraordinary and Plenipotentiary of the Kingdom of Cambodia to the Republic of Indonesia

05 March 2009 | June 2015

•  Concurrently, Permanent Representative of Cambodia to ASEAN

July 2006 | Dec. 2008

• Director-General, ASEAN-Cambodia General Department, Ministry of Foreign Affairs and International Cooperation

July 2006

• Deputy Director-General, ASEAN-Cambodia General Department, Ministry of Foreign Affairs and International Cooperation, in charge of Political and Security Affairs

2003 | July 2006

• Minister Counselor/ Deputy Chief of Mission, Royal Embassy of Cambodia to Jakarta, Republic of Indonesia 

2002 | 2003

• Deputy Director General, ASEAN-Cambodia General Department, Ministry or Foreign Affairs and International Cooperation, in charge of Economic and Functional Cooperation

 

1999 | 2002

• Deputy Director of the General Department of ASEAN-Cambodia, Ministry or Foreign Affairs and International Cooperation, in charge of Dialogue Partners with ASEAN

1994 | 1997

• Assistant to the Secretary of State for Foreign Affairs and International Cooperation 

1989 | 1992

• Second Secretary to the Embassy of Cambodia to India

1982 | 1989

• Department Relations with International Organizations of Ministry of Foreign Affairs