| April | 1991 | Joined the Company |
| April | 2012 | General Manager, Water Management & Research Div., Tokyo Main Office |
| April | 2014 | General Manager, River & Water Resources Div., Tokyo Main Office |
| April | 2016 | Assistant Managing Principal, Chubu Office |
| April | 2017 | Assistant Managing Principal, Tokyo Main Office |
| March | 2019 | Executive Officer |
| April | 2019 | Deputy Managing Principal, Tokyo Main Office |
| March | 2021 | Managing Executive Officer (present post) |
| April | 2021 | Managing Principal, Tohoku Office |
| March | 2023 | Managing Principal, Tokyo Main Office |
| March | 2025 | Director (present post) and Chief, Engineering Headquarters (present post) |