- 2009 - 現在 9/2009-present
- 2009/04 - Waseda University Center for International Education
- 2008/09 - Waseda University Center for International Education
- 2004 - 9/2004-8/2005
- 2003 - 9/2003-8/2005
- 2001/08 - 香港中文大學日本研究學系および国際アジア研究プログラム教授
- 2001 - 8/2001-8/2008
- 1996/02 - Kyushu University International Student Center
- 1996 - 2/1996 -8/2001
- 1992/12 - 副研究科長を兼任
- 1992/07 - オーストラリア・モナシュ大学大学院日本研究科準教授(高等講師)
- 1992 - Senior Lecturer and Acting / Deputy Head from 12/1992, Dept. of Japanese Studies, Monash University, Melbourne, Australia,
- 1992 - 7/1992-1/1996
- 1991/10 - 英国ロンドン大学アジアアフリカ研究大学院英国外務省海軍武官
- 1991 - 10/1991-6/1992
- 1989 - Economic Consultant and Financial Engineer, and Manager (from 1/1989), Dept. of Financial Engineering, Citicorp Investment Bank Ltd., London, U.K.
- 1988/09 - シテイコープ投資銀行(在ロンドン)金融工学部ファイナンシャルエンジニアーおよびエコノミックコンサルタント。1989年1月より金融工学部課長
- 1988 - 10/1988-9/1991
- 1986/09 - ケンブリッジ大学大学院国際関係研究科教官を兼任
- 1986 - 10/1986-9/1988
- 1985/08 - 英国ケンプリッジ大学セントジョンズカレッジ高等研究員および東洋
- 1985 - 10/1985-9/1988
- 1984/09 - University of Toronto
- 1982/09 - University of Toronto
- 1981/09 - University of Toronto
- 1981 - 9/1981-8/1982
- 日本派遣研修コース講師
- 学部講師・歴史学部客員講師を兼任
- Research Assistant , Donner Canadian Foundation Special Programme on Canada - U.S. Relations, Centre for International Studies, Graduate School of Arts and Sciences, University of Toronto, Ontario, Canada
- Research Assistant , Donner Canadian Foundation Canada-Pacific Project at the University of Toronto-York University Joint Centre on Modern East Asia-Research on Japan’s Nuclear Power Industry and Energy Strategy, Ontario, Canada
- Tutor, Department of Political Economy, the University of Toronto, Ontario, Canada
- Teaching Officer / Affiliated Lecturer, Faculty of Oriental Studies, University of Cambridge; Visiting Lecturer, Faculty of History, University of Cambridge; and Senior Student in Modern Japanese Studies, St. John's College, University of Cambridge, U.K.
- Thesis Supervisor, M.Phil Program in International Relations, Center for International Studies, Graduate School, University of Cambridge
- Sessional Lecturer, One Year Pre-Departure Program for the British Home Office and Navy Officers, the School of Oriental and African Studies, the University of London, U.K.
- Professor, "Japan in Today's World Program," International Student Center, Kyushu University, Fukuoka, Japan
- Professor in the Department of Japanese Studies, The Chinese University of Hong Kong, China
- Associate Dean, Center for International Education; and Professor, Global College, Waseda University, Tokyo, Japan