July 2023 | Present

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

February 2020 | June 2023

• Ambassador Extraordinary and Plenipotentiary of Cambodia to the Republic of Türkiye, Kyrgyzstan, Azerbaijan, Georgia, and Kazakhstan

April 2017 | February 2020

• Under Secretary of State for Europe, Americas, Africa & Middle East, Ministry of Foreign Affairs and International Cooperation

2014 | 2017

• Ambassador Extraordinary and Plenipotentiary of the    Kingdom of Cambodia to the United Kingdom of Great Britain and Northern Ireland; concurrently Ambassador accredited to the Federal Democratic Republic of Ethiopia, Ireland, Denmark, Finland, Norway, Sweden and Representative of the Royal Government of Cambodia to the African Union as Observer.    

2011 | 2013

• Advisor to Deputy Prime Minister, Minister of Foreign  Affairs and International Cooperation, with the rank of “Secretary of State”; concurrently Director of Cabinet of the Deputy Prime Minister 2012

2008 | 2010

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

2004 | 2008

• Ambassador Extraordinary and Plenipotentiary to the Commonwealth of Australia; concurrently Ambassador Extraordinary and Plenipotentiary accredited to New Zealand.

1999 | 2004

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

1995 | 1999

• Political Counselor, Royal Embassy of Cambodia in the United States of America

1994 | 1995

• Director of Asia and Oceania Department, Ministry of Foreign Affairs and International Cooperation

1992 | 1994

• Deputy Director of Press and Information Department, Ministry of Foreign Affairs and International Cooperation

1991 | 1992

• Chief of Information Bureau, Press and Information Department, Ministry of Foreign Affairs of Cambodia

1982 | 1991

• Official of Press and Information Department, Ministry of Foreign Affairs of Cambodia