President, WWF(World Wide Fund for Nature) Earth Hour Korea - 2012 ~ president
Commissionor, Korean Youth Commission for MDGs Report - 2008 ~ present
Representative, ICUNIA (Information Centre for UN and International Activities) - 2006 ~ present
chairperson of collaboration committee, SIFE(Students In Free Enterprise) - 2011 ~ present
Member 0f collaboration committee, MYSC(Merry Year Social Company) - 2011 ~ present

Director, Korea Association of International Development and Cooperation - 2011 ~ 2012
Chairman, KOCUN-IDP (Korea Organizing Committee for UN International Day of Peace) - 2008 ~ 2010
Chairman, KOCUN-WAD (Korea Organizing Committee for UN World AIDS Day - 2008 ~ 2009
Representative, USAN (United Students ActioN) - 2007 ~ 2009
President, WFUNA (World Federation of UN Associations), The Millennium Project Junior Division Korea Node - 2007 ~ 2008
Fundraiser, IVI (International Vaccine Institute) - 2007 ~ 2008
Chairman, 777 Campaign Korea Committee - 2007
President, KIPF (Korea International Political Forum) - 2006 ~ 2008
Instructor, Korea National Red Cross - 1999 ~ 2007