Julio Carrettoni
77.6K posts

Julio Carrettoni
@dev_jac
🇦🇷 Computer engineering enthusiast, gamer, iOS Developer. 💍 to a wonderful woman. @Lyft. He/Him/His @[email protected]


BREAKING: Amazon reportedly holds mandatory meeting after “vibe coded” changes trigger major outages.












We are hard at work on our next video series where we break down some of Swift’s most advanced features: isolation, ~Copyable, and ~Escapable. You will learn how to write code that enforces correctness and improves performance. Stay tuned!

Whoever said SwiftUI List and SwiftData with Query on the main actor can’t perform well, watch this. Close to 4000 items, with relationships that I’m not even prefetching yet. Didn’t even do anything special tbh…






I estimate we're only a couple of weeks from an extremely serious security issue within a company, resulting from using one of these AI assistants They're being given full access to secrets and tooling, and now we find they're accessible to the public internet Fun times ahead






We are hiring a Head of Preparedness. This is a critical role at an important time; models are improving quickly and are now capable of many great things, but they are also starting to present some real challenges. The potential impact of models on mental health was something we saw a preview of in 2025; we are just now seeing models get so good at computer security they are beginning to find critical vulnerabilities. We have a strong foundation of measuring growing capabilities, but we are entering a world where we need more nuanced understanding and measurement of how those capabilities could be abused, and how we can limit those downsides both in our products and in the world, in a way that lets us all enjoy the tremendous benefits. These questions are hard and there is little precedent; a lot of ideas that sound good have some real edge cases. If you want to help the world figure out how to enable cybersecurity defenders with cutting edge capabilities while ensuring attackers can't use them for harm, ideally by making all systems more secure, and similarly for how we release biological capabilities and even gain confidence in the safety of running systems that can self-improve, please consider applying. This will be a stressful job and you'll jump into the deep end pretty much immediately. openai.com/careers/head-o…



