| 2021 － present |
T&K Partners |
| 2020 － present |
Outside Audit & Supervisory Board Member of Development Bank of Japan Inc. |
| 2018 － 2022 |
Chief Arbitration and Mediation Officer, Japan Commercial Arbitration Association |
| 2017 － present |
Inspector, Japan Golf Tour Organization |
| 2016 － present |
Professor Emeritus, The University of Tokyo |
| 2010 － 2014 |
President, Japan ADR Association |
| 2005 － present |
Professor, Waseda University, Law School |
| 2004 － 2008 |
Visiting Professor, The University of Tokyo, COE Program |
| 2004 － 2005 |
Visiting Professor, Waseda University, Law School |
| 2004 － 2020 |
Senior Counsel, Nagashima Ohno & Tsunematsu |
| 2003 － 2015 |
President, Japan Sports Arbitration Agency |
| 1996 － 2004 |
Professor, The University of Tokyo |
| 1988 － 1989 |
Columbia University, School of Law, Visiting Scholar |
| 1987 － 1988 |
Visiting Scholar, University of Michigan, Law School |
| 1984 － 1996 |
Associate Professor, The University of Tokyo |
| 1983 － 1984 |
Research Assistant, Meiji University |
| 1982 － 1984 |
Ministry of Foreign Affairs |
| 1978 － 1981 |
Research Assistant, The University of Tokyo |
| 1978 |
The University of Tokyo (LL.B.) |
