I'm Joseph

Tokyo, Japan

I build applications
that solve real problems.

Full-stack developer based in Tokyo
Rails 8 + Hotwire · TypeScript · React

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Featured Projects

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Bumplink
A bilateral contact exchange app using QR codes and real-time coordination. Meet someone, scan, approve, take a selfie together, save the contact.
React NativeExpoRails 8 APIAction CableWebSocketsTypeScript
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ThreeWeigh
A modern weight tracker and intermittent fasting app built with Rails 8. Features real-time updates, progress visualization, and comprehensive fasting management.
Ruby on Rails 8HotwirePostgreSQLChart.jsTailwind CSS
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Keio Tsushin
A full-featured credit management system for Keio University distance learning students. Features course planning, deadline tracking, and graduation progress dashboards built with Rails 8 and Phlex.
Ruby on Rails 8PhlexHotwireTailwind CSS 4KamalAuthentication
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