Mobile Engineer. Builder. Speaker.

I’m a mobile engineer based in Japan, specializing in Flutter and Dart. At YOUTRUST I build and improve a large-scale production app, and contribute to technical direction, architecture, performance, testing and developer experience.

I like digging deeper than the screens — Flutter internals, shaders and rendering, native iOS integrations and platform APIs. I’m also a Flutter & Dart Google Developer Expert and an organizer of Flutter Tokyo, where I share what I learn with the community.

Before Flutter I worked across Android, iOS, web, Unity and backend. That background still shapes how I work: understand the whole product, experiment with new technology, and turn ideas into things people can actually use.

Outside of work I’m usually building side projects, experimenting with UI ideas, writing technical articles, or preparing my next Flutter talk.