| 1987 | Project Officer, Agricultural Development Department, Japan International Cooperation Agency (JICA) |
| 1989 | Study Officer, Agricultural Planning and Study Department, JICA |
| 1994 | MA student, Food Research Institute, Stanford University |
| 1996 | Program Officer (Health, Safe water, Education), JICA Zambia Office |
| 1999 | Deputy Head, Natural Environment Div., Forestry and Natural Environment Dept., JICA |
| 2001 | Secretariat staff, Tokyo International Conference for Africa Development (TICAD) Minister-level Tokyo Meeting, Ministry of Foreign Affairs |
| 2001 | Deputy Head, Africa Div., Africa, Middle East and Europe Dept., JICA |
| 2003 | Head, Operation Budget Team, Budget Group, Accounting and Financing Dept., JICA |
| 2004 | Head, Administration Budget Team, Budget Group, Accounting and Financing Dept., JICA |
| 2006 | Deputy Resident Representative, JICA Ethiopia Office |
| 2009 | Senior Advisor to Dept. Director, General Affairs Dept., JICA |
| 2011 | Professor of GRIPS |