Work
Portfolio of products shipped
Selected work across FinTech, IoT, and Mobility — from payment platforms used by millions to BLE smart-home systems and open-source iOS components.
PayPay
Japan’s largest mobile payment platform
Architectural leadership for a payments app used by tens of millions — modernization, payment growth features, and company-wide accessibility standards.
Telenor Microfinance Bank
Vertical integrations & acquisitions platform
Led an app squad shipping MiniApp emulation, digital onboarding, support tooling, and biometric auth for a high-scale financial platform.
Cielo Home
IoT smart-home control
Full redevelopment of an IoT iOS app with BLE device support, TLS socket security, and major UX / performance hardening.
EzBike / Roamer
Mobility & fleet operations
End-to-end ownership of a mobility iOS app — real-time driver sockets, acquisition deep links, and product analytics.
CreditCardViewSwift
Open-source card UI component
Published Swift component for polished credit-card presentation in iOS apps.
SkeletonView Animation
UITableView loading patterns
Published guidance and patterns for SkeletonView-style loading animations in Swift UITableView.
Hire me
Looking for a Senior iOS or Mobile Engineer?
I help teams modernize large iOS codebases, ship FinTech-grade payment flows, and raise accessibility and performance bars. Based in Tokyo — open to roles worldwide, remote or onsite.