👋 Hi, I'm Tony — a frontend developer from Seoul, South Korea.
I craft intuitive, high-performance web & mobile interfaces using React Native and Next.js.
- Worked at 4 companies since Dec 2021 ~
- Experience in mobile app maintenance, enterprise systems, and personal app publishing
E-commerce · Payment Systems · Socket Communication · Design System
📱 Maintained 3 Company Apps (React Native)
Tech Stack: React Native, MMKV, TanStack Query, Recoil, Zustand, TypeScript
- 🛒 E-commerce App – Coupon trading & online shopping platform
- 💬 Crypto Chat App – Real-time community for cryptocurrency
- 📚 Education App – Video streaming, text editor, in-app purchases
🏢 Enterprise System Development (Next.js & React)
Tech Stack: Next.js, Express, Socket, Sequelize, Recoil, TypeScript
- 🧩 Internal CMS – Role-based access control & data visualization
- 💳 Payment Integration – Multiple payment methods & security improvements
- 🎨 Design System – Reusable components for UI/UX consistency
- 📢 Promotional Integrations – External campaign integration
- 💬 Channel Talk Integration – Custom features for customer support
📦 Published 3 Personal Apps (React Native & Swift)
-
🎬 World Movie App (React Native)
Movie search, sort, favorites, and email login -
💡 LED Board App (UIKit)
Scrolls user text with custom color, speed, and font -
🧺 Grocery List App (SwiftUI)
To-do list app for groceries, with MVVM architecture and onboarding
🛠 Additional Skills
- Data Engineering with Python & Pandas
- Backend Development: RESTful API, Express, MySQL, Oracle
- 📧 Email: [email protected]
- 🌐 Portfolio: tony-yun.github.io
- 💻 GitHub: github.com/tony-yun
- 📝 Tech Blog: blog.naver.com/lifeyun24
- 🇰🇷 Korean – Native
- 🇨🇳 Chinese – Native (HSK 9, studied & lived abroad for 15+ years)
- 🇺🇸 English – Business (OPIc certified)
- 🇯🇵 Japanese – Conversational (JLPT N2)