FinTech · 2022 – Present
PayPay
Japan’s largest mobile payment platform
Senior iOS Engineer
At PayPay I lead iOS architectural transitions that shape experience for millions of users. Work spans SwiftUI/Combine migrations, SPM modularization, Apple Pay and VisionKit onboarding flows, GMV-critical payment reliability, and VoiceOver standards adopted across the mobile org.
SwiftUICombineSPMApple PayVisionKitAccessibility
Outcomes
- SPM modularization of Notification Center with SwiftUI + @MainActor ViewModels
- Org-wide RxSwift → Combine migration
- Apple Pay binding + VisionKit card recognition onboarding
- GMV lift via automatic user-limit handling
- Company-wide VoiceOver guidelines (iOS + Android)
- AI performance triage bot for faster releases