Szymon Rybczak

Szymon Rybczak

Software Developer

An 18-year-old React Native developer with three years of experience. Started programming at 14 and is now working on mobile app development at Callstack, making him the youngest developer in the company. In his free time, Szymon enjoys exploring new and interesting technologies.

What I’ve been shipping

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Meet react-native-ai: LLMs Running on Mobile, for Real

Run AI models on-device in React Native apps using the new react-native-ai library, powered by MLC and Vercel AI SDK. Learn how it works and why it matters.

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Receiving a Live Stream With Amazon IVS in React Native

Discover how to integrate Amazon IVS (Interactive Video Service) into your app, powered by AWS. Learn to set up a streaming player with minimal code.

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Introducing E2E Tests to React Native Core

Learn how End-to-End (E2E) tests were introduced to React Native core through collaboration between Callstack, Microsoft, and Meta engineers.

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Optimize Your Android Application’s Size With Gradle Settings

Learn how to improve TTI, reduce memory usage and size of your Android app by adjusting Proguard rules to your projects.

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Introducing E2E Tests to React Native Core

This episode of the React Native Show dives into the recent introduction of End-to-End (E2E) testing in RNTester. Join us as we unpack the thought process, technical considerations, and practical implementation of this new approach to testing in React Native.

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Callstack's Recap of App.js and Chain React 2023

Did you miss this year's App.js and Chain React? No worries, Callstack's team has prepared a recap of these events just for you.

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Run LLMs Locally With React Native & MLC

Watch how MLC brings on-device AI to React Native. See react-native-ai in action and discover what’s next for local model execution.

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New React Native Framework for Enterprise Announcement

We know what it takes to make React Native work for serious-scale applications. That’s why we created RNEF—so enterprise teams can build with confidence, efficiency, and full control over their stack.

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Bringing AI to React Native

Leveraging capabilities of local devices to run LLMs via React Native and Vercel AI SDK.

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Bringing React Server Components to React Native

React Server Components are a new topic in the community; a bunch of frameworks are implementing them, and people are discussing this topic. But what if we could use React Server Components in React Native?

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