| Jan. 1991 | Joined IDO corporation (now KDDI CORPORATION) |
| Apr. 2016 | Executive Officer, and General Manager of Consumer Sales Division and Consumer Marketing Division of KDDI CORPORATION |
| Apr. 2018 | Executive Vice President of UQ Communications Inc. |
| June 2018 | Executive Vice President and Representative Director of UQ Communications Inc. |
| June 2019 | President and Representative Director of UQ Communications Inc. |
| Apr. 2020 | Special Advisor to the Company |
| June 2020 | Representative Director and Vice President, General Manager of Sales Division and Project Promotion Department of the Company |
| June 2021 | Appointed representative director and president of Okinawa Cellular Telephone Company |