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He's a Senior OSS Consultant at Hitachi, Ltd, responsible for IAM and API-related solutions.
As an authentication and authorization expert, he has provided numerous consultations, for example designing and building API/SSO systems in various fields such as finance and public. 
As a CNCF Ambassador, he disseminates solutions and know-how for a better and more secure CNCF ecosystem through conference talks and contributions. And he's a Cloud Native Community Japan organizer and a Cloud Native Security Japan founder.
He's also a contributor to OSS such as Keycloak and 3scale.