Sign in

{:ok, "Joel Jucá"}

@joeljuca.com
882 followers 368 following 766 posts

Applied AI SWE, 20+ YoE. Serialpreneur Founder & CM @elug-ce.github.io 👉 joeljuca.com #startups #entrepreneurship #indiehacking #buildinpublic #elixirlang #golang #ruby #typescript #react #postgres #couchdb #linux #freebsd #opensource

PostsRepliesMedia
Reposted by {:ok, "Joel Jucá"}
Oregon 🕎🎲 @oregonthedm.bsky.social · 21/09/2026
464870539
Reposted by {:ok, "Joel Jucá"}
Alex Koutmos @akoutmos.bsky.social · 17/08/2026
🥳🎉Today is the day🎉🥳 @hugobarauna.com, my brother and I are ready to release Elixir for Finance! We've poured all of our knowledge and know how into what we believe is one of the best programming+finance books out there 😍. 👉 financialelixir.dev #ElixirLang #Erlang
Hugo and I pointing at our book
22911
Reposted by {:ok, "Joel Jucá"}
LadyBlue4evr💙Radical Liberal Scum @ladyblue4evr.bsky.social · 10/09/2026
Well, there you have it.
619147264707
{:ok, "Joel Jucá"} @joeljuca.com · 09/09/2026
1951 IBM ad, selling a machine that “works for 150 engineers” 😂 Any similarity with today’s AI companies is mere coincidence.
011
Reposted by {:ok, "Joel Jucá"}
Chris Klitzing 🦋🇨🇦🇺🇦 @hosea6.bsky.social · 05/09/2026
621161511637
{:ok, "Joel Jucá"} @joeljuca.com · 05/09/2026
I'm back to desktop Linux after 10+ years using Apple OSes. macOS is aweome indeed – the MacBook-iPhone integration is unmatched by anything else. But, my experience with a powerful 1K-ish USD laptop running CachyOS has been absolutely amazing! I am *very impressed* with CachyOS / Arch ecosystem.
120
{:ok, "Joel Jucá"} @joeljuca.com · 04/09/2026
TIL I can `git diff -U9999` to visualize editing files in full, instead of seeing only the specific parts where it has changed. Useful to see changes along the whole file to really understand how your changes are affecting the file itself. I needed this just now to reason on my changes to my .zshrc
010
{:ok, "Joel Jucá"} @joeljuca.com · 02/09/2026
2:14 am and I was on my laptop, tackling the challenge of performing automated core reviews with AI: the pi agent running on a GitLab CI job with everything it needs to clone the repo, check the GitLab diff, then run a code review that includes, if it decides: web search, tool calling, etc. +
110
{:ok, "Joel Jucá"} @joeljuca.com · 01/09/2026
Lots of people leaving 1Password for Bitwarden after 1P became supporter of DHH/Omarchy. Just wanted to say WELCOME TO THE CLUB, FELLAS! If yall have questions for someone using BW for quite a while (cloud version, no self-hosted; yet), send them it. Bitwarden rocks!
000
{:ok, "Joel Jucá"} @joeljuca.com · 26/08/2026
Gentlemen, I’m looking for ways to spin programs wrapped in Firecracker microVMs, with a DX as close as possible to smt like Docker Compose. Is there such thing? I’m in love with microVMs. Been reading about them and it’s the missing piece I been looking for in my dev/prod setup.
000
Reposted by {:ok, "Joel Jucá"}
P(aul) Frazee @pfrazee.com · 25/08/2026
X shuts down apps that show its posts. Bluesky exists to ernable it. One of these networks is about promoting freedom, the other is not.
431589253
{:ok, "Joel Jucá"} @joeljuca.com · 03/08/2026
Thinking on starting a new project on… CL. Oh god, take this immense desire of starting a new impossible project while I have another one, way more profitable, to work on!
010
{:ok, "Joel Jucá"} @joeljuca.com · 12/07/2026
Whyyyy Haaland?? Whyyyy????
000
Reposted by {:ok, "Joel Jucá"}
Gunnar Morling @gunnarmorling.dev · 20/11/2025
📝 Blogged: "Building a Durable Execution Engine With SQLite" Exploring the fundamentals of DE, based on a minimal engine built from scratch, using #SQLite as an execution log, and modern #Java (👋 virtual threads). 👉https://www.morling.dev/blog/building-durable-execution-engine-with-sqlite/
13510
{:ok, "Joel Jucá"} @joeljuca.com · 26/05/2026
A @naluportello.bsky.social é braba! Segue aí uma indicação forte de engenharia pra quem tiver buscando um hire técnico pro seu time.
032
Reposted by {:ok, "Joel Jucá"}
Benjamin @benjaminschneider.ch · 14/05/2026
managing npm dependencies in 2026
1135657
{:ok, "Joel Jucá"} @joeljuca.com · 15/05/2026
Yep — and also titles, basic inline formatting like bold/italic/strikethrough, images, and code blocks. And tables — and Markdown tables are absolutely terrible.
010
Reposted by {:ok, "Joel Jucá"}
Joselito @joseli.to · 06/03/2026
a gente precisa de um globo reporter do banco master
37514
{:ok, "Joel Jucá"} @joeljuca.com · 05/03/2026
See: youjustneedpostgres.com
120
{:ok, "Joel Jucá"} @joeljuca.com · 05/03/2026
Interesting provocation on AI dev output and how it can become an AI Singularity. veselin.blog/2026/02/14/a...
veselin.blog
AI Singularity
I’m a software engineer. My job mostly boils down to three things: Understanding a requirement and turning it into tasks Implementing those tasks or monitoring the implementation by others Qu…
000
Reposted by {:ok, "Joel Jucá"}
polvo @coprodu.to · 02/03/2026
Claudinho fora do ar na segunda de manhã e os devs tudo assim
061
Reposted by {:ok, "Joel Jucá"}
n me zoey 🏳️‍⚧️ @zoedsoupe.zeetech.io · 28/02/2026
just shipped anu, an open source elixir sdk for the whatsapp business api. composable message building with pipes, webhook handling, and adapter pattern for testing. github.com/zeeetech/anu-ex #ElixirLang #MyElixirStatus
github.com
GitHub - zeeetech/anu-ex: whatsapp api for devs, like slack build kit
whatsapp api for devs, like slack build kit. Contribute to zeeetech/anu-ex development by creating an account on GitHub.
1235
Reposted by {:ok, "Joel Jucá"}
Raquel @raqnery.bsky.social · 25/02/2026
Incredible how it captures the depth of the brain damage and trauma that using LinkedIn causes in a human being.
2144
Reposted by {:ok, "Joel Jucá"}
Giovanni Bassi 🇧🇷 @giggio.net · 25/02/2026
Os executivos mostrando sua incompetência: "vou poder construir meu próprio Slack com IA e parar de pagar Slack" (ou M365 ou Google). Há quantos anos existe RocketChat, livre e open source? Por que nesse tempo todo não dispensou o Slack? O problema nunca foi produzir código.
3416
{:ok, "Joel Jucá"} @joeljuca.com · 02/02/2026
I did smt cool today. I had to rewrite an AGENTS.md to bring a establish a approach to AI engineering for my team. I am not a super expert in AI, so I don't have whatever it takes to craft a great AGENTS.md file. I ended up doing smt else instead of writing everything by hand:
100
Reposted by {:ok, "Joel Jucá"}
sleipnir.bsky.social @sleipnir.bsky.social · 07/01/2026
🚀 Big news for the Spawn community! The Bixobot game — the largest codebase ever built with Spawn — has just been open-sourced 🎉 This was a real, production-grade Discord game, and a strong proof that Spawn scales and works great. github.com/eliasdarruda... #MyElixirStatus #WeBeamTogether
github.com
GitHub - eliasdarruda/bixobot
Contribute to eliasdarruda/bixobot development by creating an account on GitHub.
1104
{:ok, "Joel Jucá"} @joeljuca.com · 29/12/2025
I'm working with #TypeScript after many years with #Elixirlang. GOSH how I MISS Elixir's super-cheap procs! Being able to solve tasks by breaking them up in smaller ephemeral procs, putting them over a supervisor to restart them if smt breaks, and not having to worry much about cloud costs is gold.
1110
{:ok, "Joel Jucá"} @joeljuca.com · 14/12/2025
I recently discovered HSTS and I was: "🤯 how TF have I missed this til now? It's smt I'd adopt in absolutely ALL of my projects, with NO exceptions!" 👉 HSTS – or HTTP Strict Transport Security, is a very simple yet super-powerful HTTP/browsers feature to force HTTPS in your projects. I explain:
100
{:ok, "Joel Jucá"} @joeljuca.com · 12/12/2025
Hj tô almoçando gostosinho (cuscuz com carnes moída, ovo, cheiro-verde) com suco de caju aqui no Centro das Tapioqueiras. Se tem jeito mais **cearense** de almoçar, eu desconheço. 😂 Cuscuz é bom demaaais!
120
{:ok, "Joel Jucá"} @joeljuca.com · 08/12/2025
After working mostly w/ #Elixirlang for some good years, I'm back to writing mostly #TypeScript in a full-stack project. The code is... so much! It's a lot of code to do very little – and a lot of type noise. I'm not against types, I use types in Elixir and Golang, but MAAN, TypeScript is so... 😩
350
{:ok, "Joel Jucá"} @joeljuca.com · 08/12/2025
S3 does not support anything like POSIX-style symlinks ("virtual" files/objects that points to another, "real" file/object). This is so absolutely a common scenario that I'm surprised S3 APIs wouldn't support it by default! I'm disappointed.
100
{:ok, "Joel Jucá"} @joeljuca.com · 07/12/2025
SadServers is my new playground 🙃 sadservers.com
sadservers.com
SadServers - Linux & DevOps Troubleshooting Interviews
Linux Troubleshooting Interview DevOps SRE
011
{:ok, "Joel Jucá"} @joeljuca.com · 06/12/2025
Been checking for phones and laptop prices, and GODDAMN how tf can phones with these super-tiny powerful hardware can cost so much in front of laptops?? Buying a laptop today is $$$
000
{:ok, "Joel Jucá"} @joeljuca.com · 04/12/2025
Anyone else using the Quad9 DNS service? quad9.net
quad9.net
Quad9 | A public and free DNS service for a better security and privacy
A public and free DNS service for a better security and privacy
010
{:ok, "Joel Jucá"} @joeljuca.com · 26/11/2025
I always found Dunning-Kruger effect to be a very interesting thing: the overconfidence of non-qualified people to perform highly-qualified activities, mostly because it is so real. This post talks about the scaled DK effect that's going on in the tech world. christianheilmann.com/2025/10/30/a...
christianheilmann.com
AI is Dunning-Kruger as a service | Christian Heilmann
010
{:ok, "Joel Jucá"} @joeljuca.com · 08/11/2025
THIS is what I'd call green policy! Come onnn! Kudos to Australia 👏 electrek.co/2025/11/04/a...
electrek.co
Australia has so much solar that it's offering everyone free electricity
Australia's extensive solar power penetration makes so much energy that the government wants to offer free electricity at peak hours.
040
{:ok, "Joel Jucá"} @joeljuca.com · 27/10/2025
Found a great new use for ChatGPT, specially the voice chat: practice my #Chinese speaking. 🇨🇳😁👌
000
{:ok, "Joel Jucá"} @joeljuca.com · 25/10/2025
I’m learning Chinese, because yes 😂 I’ve failed to learn French, Italian, and German — so failing at a new language ain’t this hard anymore. But MAAAN Chinese is hard. I feel like I’m not smart to learn a new language anymore. 😩 But I felt like this while learning English and so here I am.
120
{:ok, "Joel Jucá"} @joeljuca.com · 21/10/2025
Interesting SWE read. Contains good advices on how to build great software fast, resilient to changes, and how to focus on value-oriented engineering. charemza.name/blog/posts/a...
charemza.name
It's not a hack to satisfy known requirements
And you should even take pride in doing less
020
{:ok, "Joel Jucá"} @joeljuca.com · 21/10/2025
You know what came to mind these days? #CoffeeScript. A language that brought some elegance of #Ruby to #JavaScript, and made the DX of writing front end code WAY better. I miss it. I honestly think CS, as a language, did great, and deserved to be preserved and reside amongst us till these days.
040
{:ok, "Joel Jucá"} @joeljuca.com · 13/10/2025
Really nice 101 on what MCP is about. youtu.be/FLpS7OfD5-s
youtu.be
Why MCP really is a big deal | Model Context Protocol with Tim Berglund
YouTube video by Confluent Developer
030
Reposted by {:ok, "Joel Jucá"}
Zach Daniel @zachdaniel.dev · 10/10/2025
Hey folks! We have a CVE up for #AshFramework bypass policies. It's a *highly unlikely edge case*. But, as always, we take security extremely seriously and will always follow proper procedure here. Props to @maennchen.dev for reporting and resolving 🙇
1176
{:ok, "Joel Jucá"} @joeljuca.com · 09/10/2025
This is such a GREAT comparison over performance of different Python versions over Linux, macOS – and even against Node.js 24 and Rust! Interesting times for Python developers. blog.miguelgrinberg.com/post/python-...
blog.miguelgrinberg.com
Python 3.14 Is Here. How Fast Is It?
In November of 2024 I wrote a blog post titled "Is Python Really That Slow?", in which I tested several versions of Python and noted the steady progress the language has been making in terms of…
061
{:ok, "Joel Jucá"} @joeljuca.com · 08/10/2025
Nix is a great piece of tech — but these constant political fires being lighted up makes me wonder a bit how stable are the collective of people behind it. It feels like there’s a need for some people to learn how to work collaboratively.
100
{:ok, "Joel Jucá"} @joeljuca.com · 06/10/2025
I'm having a good chat w/ ma friend ChatGPT over a distributed system issue and he recommended me using bloom filter over HyperLogLog (my first assumption over a possible/best solution for the problem), and 🤯 OMG – Bloom filters are this absolutely mind-blowing super-clever thing! I am literally 🤯!
220
Reposted by {:ok, "Joel Jucá"}
Adolfo Neto @adolfoneto.elixiremfoco.com · 03/10/2025
Interesse em mestrado em Elixir e Computação de Alto Desempenho no Ceará ou no Paraná forms.gle/zgpuvtYEyUhF...
forms.gle
Interesse em mestrado em Elixir e Computação de Alto Desempenho no Ceará ou no Paraná
O professor Francisco Heron trabalha com Computação de Alto Desempenho na UFC e orienta no MDCC https://mdcc.ufc.br/pt/ Adolfo Neto trabalha com Elixir e orienta no PPGCA https://www.utfpr.edu.br/cur...
077
{:ok, "Joel Jucá"} @joeljuca.com · 30/09/2025
Interesting piece of advise for SWEs over AI and code/engineering. Write the Damn Code, by Anton Zhiyanov. 👉 antonz.org/write-code/ "(...) Get involved with the code, don't leave it all to AI." 👌
antonz.org
Write the damn code
You are a software engineer. Don't become a prompt refiner.
140
{:ok, "Joel Jucá"} @joeljuca.com · 29/09/2025
And Torvalds strikes again, now against the "stupid helper" 😂 👉 lkml.org/lkml/2025/8/... I'm a big fan of Torvalds – he's a GREAT engineer and personality, and I do fear what the world will be after he's gone. But he can't be taken as a role model when it comes to communication. 🤦‍♂️😅
lkml.org
LKML: Linus Torvalds: Re: [GIT PULL] RISC-V Patches for the 6.17 Merge Window, Part 1
110
{:ok, "Joel Jucá"} @joeljuca.com · 25/09/2025
Among other #Postgres feats beings released in v18, one stood out for me: UUIDv7 is not built-in. What a great news! 👌 www.postgresql.org/about/news/p...
postgresql.org
PostgreSQL 18 Released!
The [PostgreSQL Global Development Group](https://www.postgresql.org) today announced the release of [PostgreSQL 18](https://www.postgresql.org/docs/18/release-18.html), the latest version of the worl...
200
{:ok, "Joel Jucá"} @joeljuca.com · 25/09/2025
Every single time I open #LinkedIn to check if there are smt worth reading, I get myself upset by reading BS that's so absurd, so cuckoo crazy, so non-logical that I doubt these absurdities are made out of lack of knowledge. They're not. These are posts made out of a pure desire to mislead people.
140