Software Engineer at @Auth0. @YCombinator Alumni (S21). Co-Founder of @arengu. Passionate about engineering and technology.

A Coruña, Spain
Sergio Regueira retweeted
Por fin podemos contaros que estamos montando un nuevo coworking en Coruña, con la colaboración de @StartupGalicia. El espacio está pensado por y para fundadores y trabajadores de startups y empresas tech. Si todo sale bien, empezaremos en diciembre. Si te interesa formar parte, apúntate a la waitlist y nos ayudas a darle forma 👇
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made a rug for your desktop so you can sweep your mess under it
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I’m beginning to realize no one is generating video games for people to actually play Prompting itself has become the videogame
Introducing SuperAstra: Edit Super Nintendo games live with GPT-6 One of my favorite ways to test new models has been reverse engineering classic games. This is hard because it's raw machine code. Astra is way better than anything I've seen. Download and examples below 👇
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One of the coolest uses of a text effect that I’ve seen in a long while. Bravo @hermeuscorp!
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my take on chapuza ownership
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Estamos contratando en Coruña 👇 🛠️ Product Engineer — 40-70k€, equity + revenue sharing: impacto directo en un producto usado por miles de clientes al mes, equipo pequeño y motivado, acceso a IA sin restricciones y retos de escala muy interesantes theirstack.com/en/careers/pr…
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The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: anthropic.com/news/fable-myt…
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Many such cases. Monoliths acquired for billions, while startups with 1,000 users worry they won’t scale without the latest architecture preached by some random conference tech influencer. Just be pragmatic. Use the right tool for the problem and the stage.
Replying to @levelsio @magnific
my first startup (Panoramio) started as a single php file in an ovh server. I had to scale up to multiple servers because of all the requests to serve the images for Google Earth and at the time hard drives had a latency of 10ms. Then as it grew I decided to structure it and it became a 2 files project, index.php and db.php, using jquery on the front. That’s when Google acquired it in 2007. I was always a bit ashamed I didn’t do a “proper architecture.” Today in Magnific our team prefers tailwind / laravel, but I can’t get my head around that. I guess I’m old or something, but if I was to start again I 100% would use simple html/css/php/db
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a guy made $36,900 on Polymarket weather bet. with a hairdryer. > he figured out the platform was pulling data from a single unguarded sensor near a Paris airport runway. > bought YES on temperature targets. walked up to the thermometer. > plugged in a hairdryer. > collected his winnings. > ran. he entered the trade with $2,000 at a price of 5 cents and exited with a profit of nearly $37,000. the meteorological service launched an investigation. the sensor now has a security guard. security is at the thermometer. the guy is gone. his profile: polymarket.com/@joethemeteor… his wallet: 0x1838cca016850ac7185a9b149fe7d0bd2d6629b4 copy him via tg with kreo.app/@join here: t.me/KreoPolyBravoBot?start=… don't lose him.
most weather traders zoom in on one city. [russell110320] zooms out to the whole earth. global temperature ranges. climate anomalies. record-hot months and years. 152 bets. 65% win rate. $44,150 total profit on Polymarket. his biggest trade: $32,400 on "Will February 2026 rank 4th hottest ever?" -> came back $42,759. this isn't weather trading. it's macro climate trading. check his profile here -> polymarket.com/@russell11032… and copy his edge via -> t.me/KreoPolyBravoBot?start=… save this alpha.
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Sergio Regueira retweeted
Time for a big systems advice thread! In distributed systems there's no magic "push everything to prod at once" button. Every service gets pushed independently and nodes within a service get updated incrementally. If you mess up forwards/backwards compatibility you can fail irrecoverably. So how to avoid this? 1/5: Decouple data and code changes. Never push out a release that changes how data is stored at the same time as the code that uses this new data. If there's a bug and you need to roll back to the old version of your code it won't be able to handle the new data in the new format. Instead push out a release that first changes the data in a way that’s compatible with both the old and new code (e.g., optional fields etc), when that’s stable push out the new code that uses it, then when that’s stable you can change the data to remove backwards compatibility. This is known as a “migration” in the database world and yes it’s annoying, but yes you need to do it.
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This is big... Anthropic just announced a model so powerful they won't release it to the public out of fear over the damage it will cause 😨 Claude Mythos Preview found thousands of zero-day exploits in every major operating system and web browser... The numbers are hard to believe: > $50 to find a 27-year-old bug in OpenBSD, one of the most security-hardened operating systems ever built > Under $1,000 to find AND build a fully working remote code execution exploit on FreeBSD that grants unauthenticated root access from anywhere on the internet > Under $2,000 to chain together multiple Linux kernel vulnerabilities into a complete privilege escalation exploit For context: these are the kinds of findings that previously required elite security researchers working for weeks. Anthropic engineers with no formal security training asked Mythos to find exploits overnight. They woke up to working code the next morning. The results were so impressive Anthropic assembled Apple, Google, Microsoft, Amazon, NVIDIA, and seven other organizations into Project Glasswing: A $100M defensive coalition. They're not releasing this model publicly. Instead, they're racing to patch the world's infrastructure before models like this proliferate.
Introducing Project Glasswing: an urgent initiative to help secure the world’s most critical software. It’s powered by our newest frontier model, Claude Mythos Preview, which can find software vulnerabilities better than all but the most skilled humans. anthropic.com/glasswing
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How Axios was compromised 🤯
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The gap between "works in a demo" and "works at scale" is about 4,000 commits.
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Replying to @arpit_bhayani
800 million users. one primary. meanwhile startups debate which database will scale before they have 10 users.
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You cannot write a random number and expect people to understand
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You cannot write a random number and expect people to understand
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President Ursula von der Leyen officially announced the EU–INC today at Davos! A single legal entity for all European founders to grow massive companies in Europe. Online incorporation in 48 hours. No more bureaucratic mess across European borders. All of you made this happen!
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realizing you don’t need to know how to code to build good ideas anymore but you have no good ideas
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Anyone else out there vibe circuit-building?
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