After worked as network specialist at several companies, joined Livedoor as general manager of Datacenter business domain. Appointed and served two years as board member of Livedoor, then quit and founded VoIP startup company in Bay Area. Returned to Japan 2006, founded ZEROSTART. Currently ZEROSTART develop and provide digital marketing solution product “ZEROZONE”, especially site search engine “ZEROZONE Search” has the biggest market share in Japan, process over 20 billion search queries in e-commerce website in one year.