- 2020/04 - 現在 Toyo University Faculty of Law Department of Managerial Law
- 2005/04 - 現在 Chuo University Faculty of Law
- 2012/04 - 2020/03 Asia University Faculty of Law Department of Law
- 2016/04 - 2017/03 Toyo University Faculty of Law
- 2015/04 - 2016/03 Trinity College, University of Dublin School of Law visiting professor
- 2010/04 - 2012/03 Asia University
- 2009/09 - 2010/03 消費者庁 企画課個人情報保護推進室 政策企画専門官
- 2007/04 - 2010/03 Associate Professor
- 2008/08 - 2009/08 Cabinet Office
- 2005/04 - 2008/03 Hirosaki University Faculty of Humanities
- 2003/04 - 2007/03 Lecturer
- 2002/04 - 2003/03 Chuo University Faculty of Economics
- 2001/05 - 2002/07 Ministry of Internal Affairs and Communications
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