Kamil Bieganowski

React & React Native dev @callstackio👨‍💻

[Kamil Bieganowski @k4_b3_]

If you want to improve security of your #reactnative app, I've created small article about SSL pinning in React Native 👀

Massive thank you to @thymikee for all the help with this one🙏

https://t.co/SqD8Zr6fXb

[Y Combinator @ycombinator]

TesterArmy is the simplest way to QA your website or mobile app.

It runs real tests across browsers and devices, catches regressions on every PR, generates tests from natural language, and much more.

Try now and start testing in minutes: @TesterArmy

[Jakub Romańczyk @_jbroma]

Re.Pack 5 is here!

⚡️ 5x faster with Rspack
🤝 Module Federation 2 support
🪶 Up to 90% smaller configs
🛠️ Reanimated, Expo Modules, & NativeWind plugins

📖 Check out the full announcement blog post below 👇

[Mike @grabbou]

🎉 Meet Fabrice AI - functional framework for building AI agents.

While building Cali, I needed something stateless that can work on the server, inside CLI, breakdown complex tasks, and be simple.

Couldn't find one, so I built one. Give it a try!

[Mike @grabbou]

Building React Native apps with Claude, soon... 🤯🤯🤯

Check how it's done ⤵️

[Tomasz Misiukiewicz @TMisiukiewicz]

A while back, I created a brownfield integration example with Mastodon. Now that RN 0.76 ships with the New Architecture enabled by default, I decided to explore the upgrade experience.

Curious about how to upgrade your own brownfield integration? Follow this thread!

[Michał Chudziak @michalchudziak]

Check out my latest video on “App Startup Optimization in React Native”! Excited to share insights and tips. Are you facing any challenges with startup times in React Native?

Watch here: https://t.co/muWeXAASGg

[Szymon Rybczak @SzymonRybczak]

Together with @thymikee we’re running @callstackio’s newsletter that we send each month, if you want summary of the latest technology news, join now! 🙌

https://t.co/d4kMRmRXXH

[Oskar @o_kwasniewski]

I've been thinking about creating a React Native MacOS library that would allow you to easily create Menu Bar apps / extend your existing app with a menu bar 🙌

Today, I've got a really basic setup working:

[Kamil Bieganowski @k4_b3_]

That #RNEU2023 merch tho 🥵😍

[Kamil Bieganowski @k4_b3_]

@satya164 this was too good 😂 cool stuff 💪#RNEU2023

[Kamil Bieganowski @k4_b3_]

@mironcatalin on animations in #ReactNative apps 🚀 #RNEU2023

[Kamil Bieganowski @k4_b3_]

@thymikee #RNEU2023 🔥

[Kamil Bieganowski @k4_b3_]

#RNEU2023 let’s gooo 🚀

[Kamil Bieganowski @k4_b3_]

@ilyamiskov * Tim Cook smiles at camera * We think you’re going to love it!

[Tomasz Misiukiewicz @TMisiukiewicz]

I've been exploring brownfield development lately and noticed a ton of theory but not enough practical examples. So, I took a shot at it, looked for some open source projects on Github and tried integrating React Native with the Mastodon app on iOS 🧵

[React Universe Summit | June 23, 2026 @reactuniverse_]

Time for the grand reveal 💥

Our guest speaker is Guenter Steiner, @HaasF1Team principal, an engineer, a leader, a team manager, and much more!

You can't miss his talk on #ReactNativeEU 2023 🏎️ https://t.co/FEL7aw3m1q

[Kamil Bieganowski @k4_b3_]

🚀🚀🚀

[React Universe Summit | June 23, 2026 @reactuniverse_]

Get ready for thrilling news! 📣 This year at #ReactNativeEU there’ll be a special speaker 🤩 We’ll soon reveal who will be the driving force behind #RNEU2023. Stay tuned for more hints in the upcoming posts 👀 and try to guess who our star speaker is!

[React Universe Summit | June 23, 2026 @reactuniverse_]

Exciting news: new speakers have just made it to the 2023 lineup🤩 Check out the talks of this year’s React Native EU 🌠 https://t.co/dZeMdUdoyj

[Kamil Bieganowski @k4_b3_]

damn 🔥🚀

[Oskar @o_kwasniewski]

Thanks for mentioning Minisim! 🥳🚀

[React Universe Summit | June 23, 2026 @reactuniverse_]

The #ReactNativeEU #conference is powered by @callstackio 🔥 This year, we bring the #ReactNative community together for the 7th time 🚀 Trust our experience and join us on Sept 7-8, in Wrocław, Poland.

⏳ Today is the last day with the best price ⏳

#RNEU2023 #RNEUvibe