Marc

@mrousavy

ceo and founder @margelo_com (acq by @callstackio) – angel investor - hobby racing driver - I built VisionCamera, Nitro and react-native-mmkv

Vienna, Austria

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Marc
@mrousavy
Sep 1
Big News: Margelo has been acquired by @callstackio for over EUR 20 million. 🥳 I founded Margelo 5 years ago, knowing nothing about business - I actually dropped out of economics university after 3 days. We built our reputation for high-end performance software through
Callstack Engineers
@callstackio
Sep 1
🎉 @margelo_com Joins Callstack to Advance High-Performance React Native Engineering Vienna, Austria. 1 September 2026. Callstack, a leader in React Native and cross-platform development, today announced that Margelo, the Vienna-based high-end engineering company behind Nitro
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Marc
@mrousavy
Oct 17
I just decoupled Nitro from react-native. The new package "𝚗𝚒𝚝𝚛𝚘-𝚌𝚘𝚛𝚎" exposes all portable native APIs, JS bindings and TypeScript types. This makes it easier for other frameworks (like @LynxJS_org or @NativeScript) to adopt Nitro - all they need is JSI. Almost all JS
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Marc
@mrousavy
Oct 16
this is the most impressive shit i've ever seen
Tesla
@Tesla
Oct 16
Real life, baby
00:00
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Marc
@mrousavy
Oct 15
I made 𝚜𝚠𝚒𝚏𝚝::𝚂𝚝𝚛𝚒𝚗𝚐 up to 60% faster
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Marc
@mrousavy
Oct 14
Nitro's new HybridClass concept is actually faster than a pure JS class in react-native (because of the Babel transform).
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