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Jakub Grzywacz

PROFILE

Jakub Grzywacz

Jakub Grzywacz focused on maintaining and upgrading core React Native libraries, delivering targeted compatibility updates and stability fixes across repositories such as mrousavy/react-native-reanimated, software-mansion/react-native-gesture-handler, and facebook/react-native. He replaced deprecated APIs to align with React Native 0.74+ and 0.77, updated build configurations for Android and iOS, and migrated key components to Swift. Jakub also addressed resource management issues by generating keep.xml files to prevent asset loss during Android builds and restored SVG image support by updating JavaScript imports. His work demonstrated depth in Android development, build systems, and React Native, ensuring smoother upgrades and robust cross-platform support.

Overall Statistics

Feature vs Bugs

25%Features

Repository Contributions

5Total
Bugs
3
Commits
5
Features
1
Lines of code
2,574
Activity Months3

Work History

April 2025

2 Commits

Apr 1, 2025

April 2025 monthly summary for facebook/react-native focusing on stabilizing Android asset handling and RN 0.79 compatibility. Delivered two critical fixes that reduce release risk and preserve asset integrity: (1) Android Build Resource Retention Mechanism to prevent resource shrinking when shrinkResources is enabled, by generating keep.xml; (2) React Native SVG Image Support with RN 0.79 by updating resolveAssetSource import to accommodate new export syntax, restoring correct image source handling.

December 2024

2 Commits • 1 Features

Dec 1, 2024

December 2024 monthly summary for software-mansion/react-native-gesture-handler focus on delivering RN 0.77 compatibility and maintaining cross-platform readiness. Overall impact: Upgraded core library and Fabric example to fully support React Native 0.77, aligning with the latest Android/iOS build environments, dependencies, and platform-specific migrations. This reduces upgrade friction for downstream users and strengthens the library’s long-term maintenance trajectory.

November 2024

1 Commits

Nov 1, 2024

November 2024: Delivered a critical compatibility update for ReanimatedPackage to align with React Native 0.74+ by replacing the deprecated TurboReactPackage with BaseReactPackage. This reduces deprecation risk, stabilizes the API surface, and smooths future upgrade paths for downstream apps. The change minimizes runtime issues and demonstrates proactive maintenance aligned with stable React Native changes.

Activity

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Quality Metrics

Correctness96.0%
Maintainability92.0%
Architecture92.0%
Performance88.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

GradleJavaJavaScriptKotlinObjective-C++SwiftTypeScript

Technical Skills

Android DevelopmentBuild ConfigurationBuild SystemsCode GenerationJavaScriptMobile DevelopmentNative ModulesReact NativeResource ManagementTestingiOS Development

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

software-mansion/react-native-gesture-handler

Dec 2024 Dec 2024
1 Month active

Languages Used

GradleJavaKotlinObjective-C++SwiftTypeScript

Technical Skills

Android DevelopmentBuild ConfigurationMobile DevelopmentNative ModulesReact NativeTesting

facebook/react-native

Apr 2025 Apr 2025
1 Month active

Languages Used

GradleJavaScript

Technical Skills

Android DevelopmentBuild SystemsCode GenerationJavaScriptReact NativeResource Management

mrousavy/react-native-reanimated

Nov 2024 Nov 2024
1 Month active

Languages Used

Java

Technical Skills

Android DevelopmentReact Native

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