| April | 1988 | Joined the Company |
| April | 2014 | General Manager, Road & Transportation Engineering Div., Tokyo Main Office |
| April | 2015 | General Manager, Transportation Systems Div., Tokyo Main Office |
| April | 2017 | Assistant Managing Principal, Tokyo Main Office |
| March | 2019 | Executive Officer |
| April | 2019 | Deputy Chief, Planning & Business Development Headquarters |
| March | 2021 | Managing Executive Officer (present post) |
| April | 2021 | Deputy Managing Principal, Tokyo Main Office |
| March | 2022 | Managing Principal,Chubu Office |
| March | 2024 | Managing Principal, Osaka Main Office |
| March | 2025 | Director (present post) and Chief, Managing Principal, Tokyo Main Office (present post) |