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Jorge Cohen

@excbadacc.es
288 followers 208 following 92 posts

EM in the ⚛️ React Team at Meta (London) Previously: 🕶️ Orion AR Glasses at Reality Labs 🚂 Citymapper I reverse engineer obsolete software/games and have a weird obsession with eink and Palm devices.

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Jorge Cohen @excbadacc.es · 09/09/2025
ICYMI - We're shipping 6 React Native this year and it's going to make your upgrading life easier! also, 1.0 maybe? who knows! I guess you'll have to watch the recording from React Native Universe. www.youtube.com/watch?v=GPto...
youtube.com
React Native Releases in 2025: Towards a Stable Future | Jorge Cohen at React Universe Conf 2025
YouTube video by Callstack
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Jorge Cohen @excbadacc.es · 06/09/2025
Hey Charlie, I’m sorry this is your upgrade experience. Any chance you could share more details on what goes wrong? we want to make this the best we possibly can.
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Jorge Cohen @excbadacc.es · 03/09/2025
Hey Andy, mind sharing some of the errors you’re getting? We’re always interested in hearing from our users and see how we can help, fix, etc.
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Jorge Cohen @excbadacc.es · 03/09/2025
That’s actually pretty good we might use that!
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Jorge Cohen @excbadacc.es · 31/08/2025
No worries Sam we appreciate the feedback :) thanks for sharing all of that, i`ll pass it along to the team, and we`ll see what we can do. I`ll try to keep you posted and maybe you can give things a try again in the future?
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Jorge Cohen @excbadacc.es · 31/08/2025
We’re really trying here, but as you know “There are 2 hard problems in computer science: cache invalidation, naming things, and off-by-1 errors.”
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Jorge Cohen @excbadacc.es · 31/08/2025
Hey Sam, I’m an EM on the React team at Meta, really curious to get your thoughts on Metro and see where we can improve
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React Universe Summit @reactuniverse.com · 22/08/2025
10 years, 5 voices, 1 panel that defines where React Native has been and where it’s going. It will be a rare chance to hear from @ccheever.com (@expo.dev), @cortini.co‬ (Meta), @grabbou.com (@callstack.com), Christoph Nakazawa & @tomocchino.com (@vercel.com‬). Don't miss it 🎟️ clstk.com/4mNA8VK
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React Native @reactnative.dev · 12/08/2025
We are excited to announce the release of React Native 0.81! 🎉 This new version brings Android 16 support, faster iOS builds (experimental), and several bugfixes. reactnative.dev/blog/2025/08...
reactnative.dev
React Native 0.81 - Android 16 support, faster iOS builds, and more · React Native
Today we are excited to release React Native 0.81!
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Jorge Cohen @excbadacc.es · 10/08/2025
The rate of side-projects is intensifying, as shown by number of registered domains per week 😅
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Jorge Cohen @excbadacc.es · 07/08/2025
I'll be speaking at React Universe Conf this year! Can't wait to share some of the work we've been doing to make React Native stabler for y'all!
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Jorge Cohen @excbadacc.es · 05/08/2025
My podcast player side-project thingy is going well, got a web version going too, and it's all deployed. Apps are on Testflight. First time since 2018 of having my own stuff ready to go out there! React Native and Expo are magic.
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Jorge Cohen @excbadacc.es · 31/07/2025
I’d like to believe that if you’re building something you have thoughts and opinions on how the thing should look/function. Just prompting “build me a calorie tracker/notes app/music player” etc, without thinking about what makes this different and better makes no sense to me.
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Jorge Cohen @excbadacc.es · 31/07/2025
I understand why someone would use AI coding assistance, it’s great when you know what you want to build and know mostly what you’re doing. What I don’t get is trying to one-shot things. What’s the point? I can see the value in it as an LLM tech demo, but for a product? Nah.
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Jorge Cohen @excbadacc.es · 26/07/2025
My heart Flutters thinking of all the UI I can Swiftly Compose with React Native.
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Jorge Cohen @excbadacc.es · 17/07/2025
Claude did all the boring stuff while I worked on the fun unique features I needed for my player. so awesome. took 4-5 hours in total.
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Jorge Cohen @excbadacc.es · 17/07/2025
I love how Claude Code helps me overcome "writer's block" on my side-projects. I wanted to write this podcast player since forever (it's highly customized to my usecase, sync server and device) but couldn't bring myself to do RSS parsing for the thousandth time in my career 🥱
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Jorge Cohen @excbadacc.es · 12/06/2025
React Native 0.80 is out, Check it out! first time for me on the release crew too.
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Cat Graffam @catgraffam.bsky.social · 30/05/2025
I recreated Edward Hopper's "Nighthawks" using uDraw for the Nintendo Wii (and also turned all the people into Miis)
a digital recreation of edward hopper's "nighthawks" featuring four characters inside of a diner, all in the style of Nintendo Miis
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Alice Averlong 🏳️‍⚧️ @alice.averlong.com · 30/05/2025
I'm experimenting with a way to show how DOS games render themselves. Basically I'm recording a lossless video of the game running on a very slow (virtual) CPU, then removing all the frames where nothing happens, and I'm playing it back sped up a lot.
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Jorge Cohen @excbadacc.es · 21/05/2025
let's go back.
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Jorge Cohen @excbadacc.es · 20/05/2025
Anyway not sure what I'm trying to say here other than - time flies and life takes you unexpected places maybe?
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Jorge Cohen @excbadacc.es · 20/05/2025
I always self identified as the "iOS guy" and "startups guy" and then "citymapper guy", and now I'm not only a "Meta person", but a "React person" talk about reinventing yourself 😅 ⚛️
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Jorge Cohen @excbadacc.es · 20/05/2025
I joined CM as an iOS engineer, ended up doing Android immediately after joining and somehow found myself supporting dozens of reports (during COVID!) It was a pretty wild ride. (Here's me in the launch video for our Apple Pay integration www.instagram.com/p/B5prFHlHuYx/)
instagram.com
Login • Instagram
Welcome back to Instagram. Sign in to check out what your friends, family & interests have been capturing & sharing around the world.
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Jorge Cohen @excbadacc.es · 20/05/2025
Here's a piece of confetti I saved from when we launched Citymapper Pass (www.theguardian.com/uk-news/2019...) It was the first product at Citymapper I worked on 0 to 1. Took us 3 months I think? People liked it! It worked! It was EXCITING!
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Jorge Cohen @excbadacc.es · 20/05/2025
I just realized the other day, that I've been at Meta longer than I was at Citymapper - my first job in the UK, and the job I stayed in the longest in 20 years.
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Jorge Cohen @excbadacc.es · 11/05/2025
@ericmigi.com Hi Eric, can’t wait until I get my watch in December. Is there a way for software developers to get a dev board? Or emulator is the best way forward for now?
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React @react.dev · 08/04/2025
React Conf is back for 2025! Join our co-hosts, Meta and @callstack.com , October 7-8 in Henderson, Nevada or join the free livestream
https://conf.react.dev
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React Native @reactnative.dev · 08/04/2025
React Native 0.79 is now available! This release includes several performance improvements. Metro is now >3x faster to cold start! Android apps will also be faster thanks to changes to JS bundle compression. reactnative.dev/blog/2025/04...
reactnative.dev
React Native 0.79 - Faster tooling and much more · React Native
Today we are excited to release React Native 0.79!
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Benj Edwards @benjedwards.com · 18/03/2025
How your email finds me
2000s photo of man with giant earbud earmuffs behind who children dressed as iPods
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Jorge Cohen @excbadacc.es · 12/03/2025
I mean, Gnome icons are pretty easy, just throw some shapes and gradients on an Inkscape canvas, and you get a half decent result, but there's a ton of small details that could make it look better, I'm definitely missing.
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Jorge Cohen @excbadacc.es · 12/03/2025
If anyone's willing to help, I'll gladly take it :)
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Jorge Cohen @excbadacc.es · 12/03/2025
Tonight's project- THE ICON! this is not going to win any design awards, but kinda fits in with the rest of the system, which is what I'm going for 😅
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Jorge Cohen @excbadacc.es · 11/03/2025
Everyone go get iPods, you can sync them now!
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Jorge Cohen @excbadacc.es · 11/03/2025
First time doing GTK/Adw, and a while since I've done any substantial C coding, so took a bit to get start, but once I got in the zone it was mostly smooth sailing. libgpod doing most of the heavy lifting obviously.
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Jorge Cohen @excbadacc.es · 11/03/2025
It's 2025, and I just want to be able to sync my iPod on my new Linux laptop, without gtkpod crashing or rhythmbox messing up my library. A few days later:
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localthunk @localthunk.com · 07/03/2025
I've had parts of this written down for a while - but I thought it was about time to document the detailed version of what happened during Balatro development localthunk.com/blog/balatro...
localthunk.com
The Balatro Timeline — LocalThunk
It’s been approximately 3 years since I began work on Balatro - and in that time I have personally documented almost nothing about the journey. This is something that has bothered me since the game la...
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React Native @reactnative.dev · 19/02/2025
React Native 0.78 is now available! This release includes React 19, support for Android vector drawables, easier brownfield integration on iOS, and more. reactnative.dev/blog/2025/0...
reactnative.dev
React Native 0.78 - React 19 and more · React Native
Today we are excited to release React Native 0.78!
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Jorge Cohen @excbadacc.es · 17/02/2025
IIRC this was one of the last things I added to CM on iOS, nice to see it's being used and appreciated :P
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React @react.dev · 14/02/2025
Today, we’re deprecating Create React App for new apps, and encouraging existing apps to migrate to a framework. We’re also providing docs for when a framework isn’t a good fit for your project, or you prefer to start by building a framework. react.dev/blog/2025/02...
react.dev
Sunsetting Create React App – React
The library for web and native user interfaces
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Eric Migicovsky @ericmigi.com · 28/01/2025
** It's happening!! ** We managed to convince Google to open source PebbleOS. Took a while, but they just did it today! github.com/google/pebble With that, we're bringing Pebble back! I blogged about it - ericmigi.com/blog/why-wer...
ericmigi.com
Why We’re Bringing Pebble Back
Eight years later, you still can’t beat a Pebble
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Jorge Cohen @excbadacc.es · 21/01/2025
🚀 And we're out: reactnative.dev/blog/2025/01... 🚀
reactnative.dev
React Native 0.77 - New Styling Features, Android’s 16KB page support, Swift Template · React Native
Today we are excited to release React Native 0.77!
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Jorge Cohen @excbadacc.es · 21/01/2025
This is amazing! Congrats SWM team!!
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ading.dev @ading.dev · 13/01/2025
I made a Doom source port that runs within a PDF file. PDFs support Javascript, so Emscripten is used to compile Doom to asm.js, which is then run within the PDF engine. Input/output is done by manipulating text input fields. doompdf.pages.dev/doom.pdf github.com/ading2210/do...
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Jorge Cohen @excbadacc.es · 20/12/2024
Good to see the team branching out!
Van with the writing “Blue Sky Developers” advertising building services and basement conversions
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stacksmashing @stacksmashing.bsky.social · 12/12/2024
Oh nice, my Binary Ninja Wrapped 2024 is in!!
binary ninja wrapped 2024your top binaries
ace3
ace2
miraiyou are
the platformer
why focus on only one architecture?
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Jorge Cohen @excbadacc.es · 10/12/2024
Cool! really like your stuff!
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Jorge Cohen @excbadacc.es · 10/12/2024
How do you make these? Complete graphical mockups or do you actually code the UI for some of these and let the OS render?
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Software Mansion @swmansion.com · 09/12/2024
The State of React Native 2024 is now open! 🚨🚨🚨 ➡️ stateofreactnative.com We've been running this survey for 3 years & it's become an invaluable resource for learning about React Native's best features and biggest pain points. Share your thoughts and help us shape the whole RN ecosystem!
its a header image with the title "State of React Native 2024"
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dan @danabra.mov · 06/12/2024
i can barely believe this but the last RN upgrade brought us something previously unimaginable — React Native DevTools that actually work. huge thanks to @motiz88.bsky.social and everyone else on the RN team who made that possible 💜
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