Contact me through: [email protected], +82-10-5682-0426
See this page on your browser: Resume - Cheolho Jeon
Experience
Coupang - Staff Mobile Engineer (Native Android)
2025.02-current
As a staff mobile engineer, Coupang, E-Commerce Engineering, Productivity & AI Innovations
- Develop and manage the Coupang app, across most domains (e.g. excluding CouPay for legal constraints etc.)
- Lead large-scale technical innovations (e.g. new login flow), productivity enhancements (e.g. custom MCPs), explored and adopted multiple SOTA tools (DSPy, langfuse etc.)
- Heavily leading, participating in productivity boost via AI tools across multiple domains.
- Our stack is MVVM + Kotlin + XML, I’m currently leading internal compose migration.
- Currently we are using Rx, but I’m leading internal coroutines adoption.
VTOV - Software Engineer (Native Android)
2021.11-2025.02
As a software engineer, VTOV, Engineering team, I
- Develop and manage the <Deli app> for drivers to aid their package pickup & delivery from scratch, end-to-end from the CI/CD pipeline to deployment, as an only client Android engineer.
- Design the SW architecture with flexibility and maintainability in mind. 99.9% Kotlin MVVM architecture with Compose, Navigation, Hilt, and Junit 4 based Unit testing.
- UI code is written in Compose with Jetpack Navigation. Safe Args with Hilt are used so that we could maximize type safety, testability, and reusability.
- Strictly followed separation of concern: Communication is done via Repositories that communicate with RESTful API (Retrofit) and MQTT servers (Paho). Business logic is written in Android VMs.
- Utilized Kotlin Coroutines and Flow for effective management of asynchronous programming.