Hyo Jang
Hyo Dev at Self-employed
Seoul, South Korea
Summary
🤩
RockstarHyo Jang is a cross-platform mobile developer and open-source contributor with 8 years of experience, now working independently as Hyo Dev from Seoul. He specializes in native integrations for Flutter and React Native, shipping audio, in-app purchase, calendar widgets, and Kakao login modules that bridge Java/Objective-C with Dart and JS. As primary contributor on several projects, he’s comfortable across the full stack of mobile apps—implementing platform-specific code, UI components, and backend glue. His OSS focus on audio and payment plugins demonstrates a knack for tackling platform quirks and lifecycle edge cases that many app teams defer. Fluent in both Android and iOS native internals, he combines practical engineering with clear documentation and sample apps to help other developers adopt his work.
8 years of coding experience
Stackoverflow
1reputation
21kreached
17answers
10questions
Github Skills (40)
objective-c10
javascript10
ios10
android-java10
react-native10
flutter-apps10
expo10
typescript10
user-interface10
nexus10
ui-design10
android-development10
wpgraphql10
java10
prisma10
Programming languages (22)
Github contributions (5)
crossplatformkorea/react-native-kakao-login
Dec 2017 - Nov 2022
react-native native module for Kakao sign in.
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:31 releases, 105 reviews, 128 commits in 5 years
Contributions summary:Hyo primarily contributed to implementing Kakao login functionality within a React Native project. Their work included creating a Java activity for Android, integrating Kakao SDK, and handling the login process. They also updated the Android build configuration. The user's commits demonstrate a focus on native module development to enable Kakao login within the React Native application.
sign-inreactsignreact-nativenative-module
hyochan/flutter_calendar_carousel
Sep 2018 - Jan 2023
Calendar widget for flutter that is swipeable horizontally. This widget can help you build your own calendar widget highly customizable.
Role in this project:Mobile Developer
Mobile DeveloperContributions:80 reviews, 181 commits, 135 PRs in 4 years 5 months
Contributions summary:Hyo primarily contributed to the development of a Flutter calendar widget. Their work involved implementing core features such as date handling, setting month dates, and fixing aspect ratios to ensure proper display. They added styling properties like border customization and provided options for different text styles and theming. The user also implemented features like the display of weekdays, integration with a date picker, and marked dates.
flutter-packagewidgetcalendardarthighly-customizable
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