Wataru joined Nippon Telegraph and Telephone Public Corporation (currently Nippon Telegraph and Telephone Corporation). After serving as Director and Executive Officer at NTT DoCoMo, and Full-time Corporate Auditor of Nippon Telegraph and Telephone East Corporation, he is currently an non-executive director (part-time) of several venture companies. In June 2021, he was appointed as Audit & Supervisory Board Member of AI inside Inc. Graduate of Faculty of Economics, The University of Tokyo.