Maciej Jastrzębski

Maciej Jastrzębski

Software Engineer

An expert in building native iOS and Android apps with years of experience. Passionate about creating well-architected, high-quality mobile applications and enabling dev teams to work efficiently. Maintainer of React Native Testing Library and Reassure OSS projects, with a strong focus on TypeScript, best practices, new architecture, testing, and performance. Enjoys traveling and capturing travel photography.

What I’ve been shipping

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Adding React Native to an Existing Flutter App

Discover how to integrate React Native into an existing Flutter app, leveraging platform views and setting up on both Android and iOS.

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React Native Testing Library With Redux

In this article, we discuss how Redux can be helpful in proceeding tests with React Native Testing Library and how can you benefit from this solution.

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What's New in Reassure 1.0

Find out how to monitor React and React Native performance better than ever before with Reassure's new features.

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Reassure - Open Source Tool Measuring Performance Regression

Explore Reassure, an Open Source tool for measuring performance regression in React Native apps.

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React Native Performance in 2024: Challenges, Solutions, Forecasts

Join us as we explore the latest developments in React Native performance optimization with experts from Expo and Callstack.

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Join the team building the React Universe

We’re a team of trusted React and React Native contributors who care deeply about great code, Open Source, and solving real-world problems together.