Flutter / Dart engineer based in Tokyo, Japan. Founder & CEO of CYKAMI Inc. Available for fully remote projects only (on-site visits for kickoffs or device testing are fine).
- Coding since 2016, professionally since 2021, independent since 2023 (incorporated as CYKAMI Inc. in 2026)
- Mobile apps with Flutter from 0 to 1 and on to release — including a touch-panel UI for a palletizing robot (Flutter × ROS) and rescuing an app that could not be built for months
- Web front-end with React / Next.js / Astro and headless CMS
- AI-driven development with Claude Code is part of my daily workflow, and I build tooling for it (see ccs below)
- Part-time lecturer of mobile app development (Flutter / React Native) at a vocational school
- Speaking at FlutterKaigi 2026 (LT, Oct 29)
- Most of my work is private client work, so public activity here is only a small part of it
- I write on Zenn (Japanese)
- asdf-flutter — Maintainer. Flutter SDK plugin for the asdf version manager.
- netcap — Host-based QoS CLI. Throttle the internet bandwidth of every computer on your network, from one of them, with one command. (macOS / Linux / Windows)
- ccs — A thin tmux wrapper to launch, find and close multiple Claude Code sessions from one hub. (docs)