| 1994.8
- 1998.3 |
Assistant, Department of Mathematics, Tokyo Institute of Technology |
| 1998.4
- 2006.9 |
Assistant, Graduate School of Science and Engineering, Tokyo Institute of Technology |
| 2006.10
- 2007.3 |
Associate Professor, Graduate School of Science and Engineering, Tokyo Institute of Technology |
| 2007.4
- 2016.3 |
Associate Professor, Graduate School of Science and Engineering, Tokyo Institute of Technology |
| 2016.4
- 2017.3 |
Associate Professor, Department of Mathematics, Tokyo Institute of Technology |
| 2017.4
- |
Professor, Faculty of Economics, Hitotsubashi University |
| 2017.4
- |
Professor, Graduate School of Economics, Hitotsubashi University |