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All work

YellPay

Passwordless payments app for Japan's PAY ROUTE.

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In short

PAY ROUTE's consumer fintech app: ID-less authentication and QR payments in React Native, wrapping the company's native iOS/Android SDK.

The problem

PAY ROUTE's passwordless platform lived inside a native SDK. The product needed one cross-platform app around it, with payment flows that elderly and assisted-care users could actually complete.

My approach

  • Wrapped the native iOS/Android SDK behind a React Native bridge so a single codebase drives both platforms.
  • Built card registration, QR payment and transaction history flows with Expo tooling.
  • Designed the flows accessibility-first for users underserved by traditional ID/password systems.

Outcome

A shipped fintech app that brings ID-less payments to users who struggle with passwords, from one React Native codebase.

  • Native payments SDK wrapped for React Native
  • ID-less authentication + QR payments
  • Accessibility-first payment flows