1989 joined the Ministry of Foreign Affairs, Lao PDR
1991-1994 Member, Lao-Myanmar Boundary Demarcation Technical Team
1994-1998 Third and Second Secretary, Embassy of the Lao PDR to the Kingdom of Thailand, Bangkok
1998-2002 Secretary to the Minister, Ministry of Foreign Affairs, Lao PDR
2002-2005 Director, Political-Security Cooperation Division, ASEAN Department Ministry of Foreign Affairs, Lao PDR
2005-2008 Deputy Director General, ASEAN Department, Ministry of Foreign Affairs, Lao PDR
2008-2011 Deputy Permanent Representative of the Lao PDR to the United Nations,
New York, USA
2011-2012 Deputy Director General, Economic Affairs Department, Ministry of Foreign Affairs, Lao PDR
2012-2015 Director of Trade and Investment Promotion Division, ASEAN Japan Centre, Tokyo, Japan
2015-2018 Director General, Economic Affairs Department, Ministry of Foreign Affairs, Lao PDR
Since 2019 Ambassador Extraordinary and Plenipotentiary of the Lao PDR to the Republic of the Philippines