Sungmin Joh

Android developer with 2 years of experience, skilled in using Flutter for freelance projects and knowledgeable in React Native for cross-platform development. Experience includes collaborating with teams via GitHub, launching apps on the Google Play Store, and managing their lifecycle from bug fixes to feature enhancements. This has contributed to successfully attracting and maintaining a user base of over 10,000, showcasing dedication to developing high-quality applications and continuous improvement based on user feedback.

EDIYA CAFE APP 

May 2022 - July 2022

- Kotlin

• Developed a clone of the EDIYA Coffee app, enabling user login, product browsing by categories, cart management, and order functionality
• Implement Bind Service to maintain users' shopping cart through app session, communicate each data between Activity and Fragment.

Raise Developer

July 2022 - October 2022

- Kotlin, Firebase, GraphQL

• A Game that combines the traditional clicker game mechanic with a feature that allows people to earn in-game currency based on their GitHub Contribution information.
• Implemented animations using ObjectAnimator, Thread, and Coroutines; Utilized Firestore for GitHub authorization, user data storage, and ranking system.
• Collaborated with a team of three using GitHub Flow; Integrated user GitHub contribution data via GraphQL to accumulate in-game currency.

Transpose 

November 2022 - to Current

- Kotlin, Exoplayer, Youtube data API, Room DB, Google Play Store API

• Created Youtube streaming App that users can adjust a pitch, tempo, equalizer, bass boost, 3D effects, and reverb effects in real-time for enhancing listening experience.
• Implement MVVM patterns, Clean Architecture; Utilized Android Jetpack components (ViewModel, LiveData, Room DB, Navigation Component), Networking(Coroutine, RxJava, Retrofit).
• Launched Google Play Store, implemented In-App Update, In-App Review features; Continuously maintaining and updating the app based on users' feedback.