Mike Grabowski
Co-Founder & CTO at Callstack
United States
Summary
🤩
Rockstar🎓
Top SchoolMike Grabowski is a Co-Founder and CTO with 12 years of hands-on experience building cross-platform React and React Native products and developer tools. He leads Callstack, helping enterprises ship faster by blending strategic technical leadership with full‑stack engineering. An active open-source maintainer, his contributions touch high-profile projects including React Native, Uniswap’s interface, and tooling like Haul and the React Native CLI—often improving UI components, native bridges, and developer workflows. He pairs deep mobile iOS/Android expertise (native modules, filesystem, ads) with frontend polish and testing discipline, and when not debugging complex integrations you’ll likely find him on a race track.
13 years of coding experience
Bachelor's Degree, Computer Science, Bachelor's Degree, Computer Science at Wroclaw University of Technology
Stackoverflow
1,965reputation
220kreached
59answers
2questions
react-native
top-5%
Github Skills (65)
mobile-development10
styled-components10
rescript10
rest-api10
javascript10
component-development10
uid10
front-end-development10
typescripts10
cli10
typescript10
android10
angularjs10
nodejs10
native-android10
Programming languages (23)
Github contributions (5)
callstack/react-native-fbads
Sep 2016 - Aug 2017
Facebook Audience SDK integration for React Native
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:7 releases, 37 commits, 24 PRs in 10 months
Contributions summary:Mike primarily contributed to the iOS side of the React Native Facebook Ads integration. Their work included implementing banner and interstitial ad functionalities, refactoring code, and addressing issues related to taps on Android. They also updated the project to support React Native 0.40. The user also integrated the AdSettings features.
react-nativenative-adsfacebook-sdkjavascript
react-native-community/cli
Apr 2016 - Feb 2022
The React Native Community CLI — Command line tools to help you build React Native apps
Role in this project:Mobile Developer (Android/iOS)
Mobile Developer (Android/iOS)Contributions:7 releases, 110 reviews, 186 commits in 5 years 11 months
Contributions summary:Mike primarily contributed to the React Native Community CLI, focusing on improving the build and launch process for Android applications. Their work included adding the functionality to respect application IDs from the build.gradle file during app launching. The contributions also involved refactoring template name logic for the init process and improving error handling for CocoaPods installations. The user also removed deprecated properties from the run-android configuration and refined the test setup for Android.
clicommand-line-toolreact-native-appreact-native-communityreact-native
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