- 2014/04 - 現在 Professor, Faculty of Commerce, Waseda University
- 2022/10 - 2023/03 National Chengchi University Visiting Researcher
- 2018/02 - 2022/06 Egypt-Japan University of Science and Technology Faculty of International Business and Humanities Visiting Professor
- 2017/04 - 2017/09 INSEAD Visiting Researcher
- 2014/04 - 2017/03 Sophia University Faculty of Economics
- 2008/04 - 2014/03 Rikkyo University College of Economics
- 2007/04 - 2014/03 Associate Professor, Faculty of Commerce, Waseda University
- 2011/01 - 2011/03 Nanyang Technological University Visiting Researcher
- 2010/09 - 2010/12 Hong Kong Polytechnic University Visiting Researcher
- 2008/12 - 2009/01 University of Tsukuba
- 2004/04 - 2007/03 Assistant Professor, School of Commerce, Waseda University
- 2005/09 - 2006/03 早稲田大学系属早稲田実業学校 非常勤講師(教科:情報)
- 2004/04 - 2005/03 早稲田大学高等学院 兼担講師(教科:情報)
- 2003/04 - 2004/03 早稲田大学高等学院 非常勤講師(教科:情報)
- 2000/04 - 2004/03 Research Associate, Media Network Center, Waseda University
- 1999/04 - 2001/08 早稲田大学系属早稲田実業学校 非常勤講師(教科:商業)
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