Architecting High-Scale iOS & Mobile Applications
Specialized in architecting high-scale iOS applications with Swift, SwiftUI, TCA, VIPER and Flutter. Shipped products serving over 3,000,000+ active users.
Swift · TCA · Tuist
A curated collection of production mobile apps — spanning enterprise airlines super-apps, fintech wallets, food delivery at massive scale, and retail photobooth systems.
Create, customize, and print photos via photobooth machines.
iOS app enabling users to create, customize, and print photos via photobooth machines. Built core architecture and key photo-printing features with complex UI/UX and RESTful API integration. Integrated payment, QR code, WKWebView, Firebase, KakaoSDK, NaverSDK, and AppAuth.
Vietnam Airlines internal super-app.
Internal mobile super-app for Vietnam Airlines — bundling SkyIdea, KPI, Newsfeed, Notifications and other enterprise services into a single platform for 15,000+ employees.
Korea’s #1 photobooth app.
Retail photobooth app in Korea — capture, edit and share photos right at the kiosk. Built SwiftUI + TCA flows, integrated Kakao / Naver SDKs and real-time photo sync.
Korea’s leading food delivery platform.
One of Korea’s largest food delivery platforms, acquired by Delivery Hero. Built and maintained complex UI/UX flows, optimized performance and integrated marketing-tech services.
AI-powered education platform integrating LMS and SIS.
Smartlearn is an AI-powered education platform integrating LMS and SIS functionalities. I contributed to the development of the Lost & Found module, which enables users to report, search, and manage lost or found items efficiently within the platform.
Real-time video/audio meeting iOS SDK.
This project develops an iOS SDK for meeting applications, providing seamless video/audio calls and real-time communication. It leverages LiveKit for high-quality media streaming, ChatSdk for text and multimedia messaging, and sockets for low-latency interactions.
Toyota Japan’s official e-wallet.
myTOYOTA Wallet mobile payment solution with e-money, credit and debit cards. Built features, reviewed code, refined architecture and hardened the security of all financial flows.
Global crypto exchange.
Coin-to-coin crypto exchange operating across multiple markets. Worked on feature development, performance tuning and real-time flows over WebSocket / Socket.io.
Deep mastery of the Apple ecosystem, from low-level runtime optimizations to declarative SwiftUI fluid motion and production CI/CD automation.
A truly exceptional mobile application is one where the user never thinks about the software — only the experience. Having spent 5+ years mastering Swift, Objective-C, SwiftUI and Flutter across high-frequency finance, enterprise airlines, and food delivery platforms, I hold every line of code to that standard.
Deep profiling with Xcode Instruments, zero dropped frames, sub-second cold starts, and careful memory budgeting for buttery smooth rendering.
Rigid adherence to Apple Human Interface Guidelines. Crafting fluid spring animations, tactile haptic feedback, and spatial depth.
Battle-tested experience with TCA, VIPER, Tuist modularization, and unidirectional data flow to keep multi-engineer codebases rock solid.
Build and lead mobile for large outsourcing products — from enterprise super-apps to fintech, food delivery, photobooth and edtech.
Built fintech products for the Japanese market.