| 1994.4
- 1997.3 |
Postdoctoral Fellow of Japan Society for the Promotion of Science, -, Japan Society for Promotion of Science |
| 1995.3
- 1995.12 |
客員研究員, Institut of Modern history of Private law, Univ. of Cologne |
| 1997.4
- 1997.6 |
Postdoctoral Fellow of Japan Society for the Promotion of Science, -, Japan Society for Promotion of Science |
| 1997.7
- 1999.3 |
Assistant Professor, Faculty of Law, Hitotsubashi University |
| 1999.4
- 2003.1 |
Assistant Professor, Graduate School of Law, Hitotsubashi University |
| 2000.4
- 2001.3 |
Part-time Assistant Professor, College of Law, Nihon University |
| 2001.4
- 2004.3 |
Part-time Assistant Professor, Faculty of Law, Dokkyo University |
| 2003.2
- 2007.3 |
Associate Professor, Graduate School of Law, Hitotsubashi University |
| 2004.4
- 2006.3 |
Part-time Assistant Professor, Law School, Waseda University |
| 2004.4
- 2006.3 |
Part-time Assistant Professor, 大学院法学研究科, Seijo University |
| 2004.4
- 2006.3 |
Part-time Assistant Professor, Faculty of Law, Seijo University |
| 2004.4
- 2006.3 |
Part-time Assistant Professor, 法務研究科, Omiya Law School |
| 2005.4
- 2006.3 |
Part-time Assistant Professor, School of Law, Senshu University |
| 2006.4
- 2007.9 |
客員研究員, Faculty of Law, Humboldt Univ. Berlin |
| 2007.10
- 2015.3 |
Part-time Assistant Professor, 法務研究科, Omiya Law School |
| 2007.10
- 2021.3 |
Part-time Assistant Professor, Law School, Waseda University |
| 2007.10
- 2021.6 |
Part-time Assistant Professor, 大学院法学研究科, Seijo University |
| 2007.4
- 2010.4 |
Associate Professor, Graduate School of Law, Hitotsubashi University |
| 2008.4
- 2020.3 |
Part-time Assistant Professor, 大学院法務研究科, Keio University |
| 2010.5
- |
Professor, Graduate School of Law, Hitotsubashi University |
| 2010.5
- |
Professor, Faculty of Law, Hitotsubashi University |
| 2014.4
- 2015.3 |
Part-time Assistant Professor, 法務研究科, Omiya Law School |
| 2016.6
- 2020.3 |
Professor, Center for Historical Social Science Literature, Hitotsubashi University |
| 2022.4
- 2024.3 |
Dean, Graduate School of Law, Hitotsubashi University |
| 2022.4
- 2024.3 |
Dean, Faculty of Law, Hitotsubashi University |
| 2022.4
- 2024.3 |
Dean of Center, Graduate School of Law, Institute for Global Governance Research, Hitotsubashi University |
| 2024.9
- |
Vice President for Global Engagement, Hitotsubashi University |