- 2022/04/01 - Chuo University Specially Appointed Professor
- 2021/07 - National Institute of Information and Communications Technology National Cyber trainning Center, Institute of Cybersecurity Associate Director General
- 2019/07 - Ministry of Internal Affairs and Communications General Affairs Division Information and Communications Bureau Principal Depuity Director
- 2017/07 - Cabinet Secretariat, Government of Japan National center of Incident readiness and Strategy for Cybersecurity Deputy Counsellor
- 2015/07 - Cabinet Secretariat Intellectual Property Strategy Headquoarters Deputy Counsellor
- 2013/07 - Ministry of Internal Affairs and Communications Telecommunications Policy Division, Telecommunications Business Department , Telecommunications Bureau Depuity Director
- 2012/07 - Ministry of Internal Affairs and Communications Information and Communication Promotion Division,information and Communications Bureau Depuity Director
- 2005/04 - Ministry of Internal Affairs and Communications
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