After developing the SNS service of Keel Networks Inc., he joined Nihon Gigei Inc.. He then participated in the establishment of Shake Hands Inc., a company that offers business card management. He also served as the development manager of Nihon Gigei’s groupware “Rakumo” which was provided to over 400 companies and a total of 120,000 people. During his term, he contributed to its improvement leading to its profitability. Afterwards he joined Walkntalk Inc..