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Kacper Kafara

PROFILE

Kacper Kafara

Kacper Kafara developed and maintained core navigation features for the software-mansion/react-native-screens repository, focusing on both iOS and Android platforms. He architected native bottom tab and stack navigation systems, integrating JavaScript-driven lifecycle management and event handling to improve cross-platform consistency. Using Swift, Objective-C, and TypeScript, Kacper refactored native–JS communication, introduced feature flags for safer rollouts, and optimized build systems for CI/CD efficiency. He also addressed stability and compatibility issues following React Native upgrades, ensuring reliable releases. His work demonstrated depth in component integration, release management, and code quality, resulting in scalable navigation infrastructure and streamlined development workflows for the project.

Overall Statistics

Feature vs Bugs

77%Features

Repository Contributions

88Total
Bugs
8
Commits
88
Features
27
Lines of code
8,614
Activity Months9

Work History

July 2025

17 Commits • 3 Features

Jul 1, 2025

July 2025 highlights for software-mansion/react-native-screens: delivered a gamma-enabled architecture and CI workflow to enable faster experimentation and safer end-user builds, expanded Stack navigation with a three-state lifecycle and improved nesting for Android, and hardened platform builds for iOS/tvOS with legacy architecture. In addition, completed maintenance and code quality improvements to stabilize releases and improve contributor experience across the repo.

June 2025

21 Commits • 6 Features

Jun 1, 2025

June 2025 summary: Delivered cross-platform navigation foundations and stability improvements that enable scalable RN features and cost-efficient releases. Notable work includes iOS Stack Navigation foundation with Swift interoperability and StackScreen/StackHost scaffolding, Android Bottom Tab PoC with lifecycle events and a robust tab system, targeted iOS build fixes after RN upgrade, CI/CD workflow optimizations to gate builds and limit end-to-end tests, and Swift compatibility improvements for React Native codegen and RCTImage. These efforts enhance developer velocity, stability, and cross-platform consistency.

May 2025

21 Commits • 7 Features

May 1, 2025

May 2025 summary for software-mansion/react-native-screens: Delivered a comprehensive iOS Bottom Tabs PoC with JS-driven tab changes and lifecycle handling, including a freeze capability during JS transitions. Implemented UI/UX enhancements (blur effect, tab badges, placeholders) and added title support with configurable font sizes. Strengthened reliability through a debug-mode safety check for multiple focused tabs and a JS-only tab-change experiment with exposed controls. Refactored the native–JS communication model to improve architecture and address codegen issues. Introduced featureFlags with a default-enabled controlledBottomTabs flag to enable safer rollout, and added performance/testing improvements such as disabling view recycling for faster reloads and revamped test configurations in the example app.

April 2025

2 Commits • 1 Features

Apr 1, 2025

Month: 2025-04 | Repository: software-mansion/react-native-screens Focus: Release tagging for pre-production milestone 4.11.0 Beta. No code changes were required this month; the team published and documented beta release tags to enable QA and release readiness. Key actions included tagging two pre-release commits and ensuring traceability for the 4.11.0 beta release. Artifacts: - beta.0 tag corresponding to commit 9a9864f7a002bd21c90fd20060cbdcced879499d with message 'Release 4.11.0-beta.0' - beta.1 tag corresponding to commit 26e7630ff3b723f890e73dc76385bdaa47361c79 with message 'Release 4.11.0-beta.1' Impact: Established a stable pre-production milestone, enabling QA validation, reproducible builds, and smoother production readiness aligned with the product roadmap. Bugs: No major bugs fixed in this repository this month. Overall: Release tagging discipline strengthened; improved traceability and coordination with product, QA, and development teams. Technologies/Skills demonstrated: Git tagging and release management, versioning discipline, release notes/documentation, cross-team collaboration, and build/release reproducibility.

March 2025

3 Commits • 1 Features

Mar 1, 2025

March 2025: Release tagging-focused month for React Native Screens 4.10.0. Key milestones tagged: 4.10.0-beta.2, 4.10.0-beta.3, and 4.10.0 final. No code changes accompanying these tags; the work ensures stable upgrade paths, deterministic builds, and improved traceability for downstream consumers. This aligns release management with project versioning standards and reduces upgrade friction.

February 2025

11 Commits • 5 Features

Feb 1, 2025

February 2025 (2025-02) monthly summary for software-mansion/react-native-screens focusing on release management and versioning across 4.7.x to 4.10.0 beta cycles. Delivered structured release milestones, final tags, and beta cycles to improve stability, upgrade experience, and ecosystem alignment.

January 2025

3 Commits • 1 Features

Jan 1, 2025

Month: 2025-01. Key deliverables focused on release tagging for the react-native-screens library, establishing clear milestone-based versions and improving downstream adoption. Highlights include tagging releases for 4.5.0 stable, 4.6.0-beta.1, and 4.6.0 stable with explicit commit references to each milestone (9861b48fd98be8e17f16144bb9d462ba35d2db47; a8f1be342b712f6f6556ebabd5f158d242640abe; a8ae9623d9fd02abc18a953ef9d21c56fa1d30fd). No major bugs were fixed this month as the focus was on release process and versioning discipline. Overall impact includes improved release traceability, easier consumer pinning, and a clearer upgrade path. Technologies/skills demonstrated: Git tagging and release management, semantic versioning, release-note planning, and cross-team collaboration.

December 2024

5 Commits • 2 Features

Dec 1, 2024

December 2024 focused on stability, usability, and release discipline across RN ecosystem. Delivered targeted fixes to reduce runtime crashes, introduced ergonomic API improvements to simplify developer experience, and advanced release tagging practices to improve milestone visibility and downstream adoption.

November 2024

5 Commits • 1 Features

Nov 1, 2024

Concise monthly summary for 2024-11 focusing on key accomplishments in the software-mansion/react-native-screens repository. The month centered on formal release tagging for the 4.x series, enabling clear versioned distribution and upgrade planning.

Activity

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Quality Metrics

Correctness93.0%
Maintainability92.0%
Architecture91.4%
Performance87.2%
AI Usage21.6%

Skills & Technologies

Programming Languages

C++JavaJavaScriptKotlinMarkdownObjective-CObjective-C++RubyShellSwift

Technical Skills

Abstract ClassesAndroid DevelopmentArchitecture MigrationBug FixingBuild AutomationBuild ConfigurationBuild SystemsC++CI/CDCocoaPodsCode FormattingCode GenerationCode RefactoringCodegenComponent Development

Repositories Contributed To

4 repos

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

software-mansion/react-native-screens

Nov 2024 Jul 2025
9 Months active

Languages Used

C++JavaScriptObjective-CObjective-C++SwiftTypeScriptJavaKotlin

Technical Skills

Code RefactoringComponent DevelopmentComponent IntegrationContext APIDebuggingEvent Handling

facebook/react-native

Jun 2025 Jun 2025
1 Month active

Languages Used

JavaScriptObjective-C

Technical Skills

CodegenJavaScriptPodspec ManagementReact NativeReact Native DevelopmentiOS Development

microsoft/react-native-macos

Dec 2024 Dec 2024
1 Month active

Languages Used

JavaJavaScriptKotlin

Technical Skills

Android DevelopmentBug FixingReact NativeView Management

software-mansion/react-native-gesture-handler

Dec 2024 Dec 2024
1 Month active

Languages Used

TypeScript

Technical Skills

Gesture HandlingMobile DevelopmentTypeScript

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