- Apr.1983 Passed High Diplomatic Service Examination
- Jun.1983 Joined the Ministry of Foreign Affairs (MOFA)
- Jan.1989 Second Secretary, Korean Permanent Observer Mission to the United Nations in New York,
U.S.A.
- Dec.1995 First Secretary, Korean Embassy in the Kingdom of Thailand
- Mar.1999 Assistant Secretary, Office of the President
- Aug.2000 Director, Southwest Asia and Oceania Division, Asian and Pacific Affairs Bureau, Ministry of
Foreign Affairs and Trade (MOFAT)
- Jan.2001 Secretary to the Minister of Foreign Affairs and Trade
- Jan.2002 Counsellor, Korean Embassy in the United States of America
- Dec.2004 Minister-Counsellor, Korean Embassy in the Republic of the of Myanmar
- Mar.2007 Senior Assistant Secretary to the President for Protocol Affairs, Office of the President
- Mar.2008 Director-General for Planning and Management, MOFAT
- Jan.2009 Director-General for South Asian and Pacific Affairs, MOFAT
- Mar.2011 Ambassador Extraordinary and Plenipotentiary to the Democratic Socialist Republic of
SriLanka
- Apr.2014 Head of Preparatory Secretariat for ASEAN-Republic of Korea Commemorative Summit 2014
- Mar.2015 Special Advisor to the Minister, Ministry of Foreign Affairs (MOFA) and Government
Representative for UNESCO Affairs
- Nov.2015 Special Advisor to the Minister, MOFA and Government Representative and Sherpa for the
Nuclear Security Summit
- Mar.2016 Deputy Minister for Multilateral and Global Affairs, MOFA
- Jan.2018 Ambassador Extraordinary and Plenipotentiary to the French Republic
- Dec.2020 2nd Vice Minister of Foreign Affairs