- 2018/04 - 現在 International University of Health and Welfare Center for Liberal Arts, Narita Associate Professor
- 2017/04 - 2018/03 Komazawa University Faculty of Global Media Studies Adjunct Lecturer
- 2015/04 - 2018/03 University of Tokyo Graduate School of Economics Project Researcher
- 2015/04 - 2018/03 Shibaura Institute of Technology College of Engineering and Design Adjunct lecturer
- 2016/04 - 2017/03 Nihon University College of Economics Adjunct Lecturer
- 2013/04 - 2015/03 Cabinet Office, Government of Japan Research Division, Gender Equality Bureau Counsellor for Gender Equality Analysis
- 2009/10 - 2013/03 Freelance Analyst
- 2008/07 - 2009/01 Deutsche Telekom KK Research Division Research Vice President
- 2003/01 - 2008/06 Gartner Japan, Inc. Research Division Principal Analyst
- 2000/05 - 2002/12 Gartner Group, Japan Ltd. Dataquest Analyst
- 1999/07 - 2000/04 NTT Communications Corporation Consumer and Office Business Division Staff
- 1998/04 - 1999/07 Nippon Telegraph and Telephone Corporation International Business Division Staff
- 1993/04 - 1998/03 InfoCom Reserach, Inc. International Research Division Researcher
- 1990/04 - 1993/03 Nippon Telegraph and Telephone Corporation Minato Branch, Tokyo Division Staff
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American Economic Association
, JAPANESE ECONOMIC ASSOCIATION
, Public Policy Studies Association, Japan
, International Telecommunications Society
, THE EUROPEAN UNION STUDIES ASSOCIATION-JAPAN
, The Japan Society of Information and Communication Research