José Valim (@josevalim) / X

José Valim

2,430 posts

José Valim

@josevalim

Creator of @elixirlang. Chief Adoption Officer at @dashbit, where we build tidewave.ai and livebook.dev.

Kraków, Poland

Joined November 2007

Pinned
José Valim
@josevalim
Nov 11, 2025
It is finally here: Tidewave now supports Claude Code and OpenAI Codex. Tidewave unlocks the full-stack potential of your favorite coding agent by tightly integrating it with your web app and web framework at every layer, from UI to database. More info 👇
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José Valim
@josevalim
Jan 8, 2024
Tomorrow marks 13 years since the first commit to the Elixir repo. And today we celebrate by announcing that Elixir is, officially, a gradually typed language:
193K
José Valim
@josevalim
May 24, 2024
Today Elixir turns 12 years old! 🎉🥳 Let's celebrate with Elixir v1.17-rc, which includes our initial work on set-theoretic types, a brand new duration data type, and support for Erlang/OTP 27. Want to give Elixir a gift? Give it a star on GitHub!
GitHub - elixir-lang/elixir: Elixir is a dynamic, functional language for building scalable and...
From github.com
62K
José Valim
@josevalim
Aug 15, 2024
Please welcome Elixir's official Language Server team: @icecreamcohen (Lexical), @mitchhanberg (NextLS), and @lukaszsamson (ElixirLS) team up to provide a unified language server platform. Read all about it here:
Announcing the official Elixir Language Server team
From elixir-lang.org
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José Valim
@josevalim
Jun 12, 2024
Woot! Elixir v1.17 is out, bringing you the first warnings and type checking based on our on-going work to perform type inference from patterns (and soon guards). A lot more to come, hopefully:
Elixir v1.17 released: set-theoretic data types, calendar durations, and Erlang/OTP 27 support
From elixir-lang.org
59K
José Valim
@josevalim
Dec 6, 2023
The Erlang VM has been the most transformative technology of my professional journey. Almost 14 years later and we are still uncovering novel patterns and approaches enabled by it more than three decades ago. 🤯
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José Valim
@josevalim
Apr 29, 2025
Introducing Tidewave: beyond code intelligence. While working on our web apps, we run code, query the database, read logs, search docs… but AI tools are limited to compiling code. Watch Tidewave transform Claude Desktop into an agent by running a MCP server in your web app!
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José Valim
@josevalim
Jun 2, 2024
Many forget that the client-server architecture is a *distributed system*. The request-response workflow we have historically used helped us forget it. However, if you keep a WebSocket connection open with bidirectional data, you can no longer ignore it. 🧵
Theo - t3.gg
@theo
Jun 1, 2024
Everyone was so busy showing Hey's performance problems that they forgot to show how broken it is. What do you think happens if I press the "enter" key twice?
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José Valim
@josevalim
Jul 29, 2025
Congrats to Rust, Gleam (welcome!!) and Elixir on being the top 3 most admired languages on the StackOverflow Survey and Phoenix for being the most admired web framework for the third year in a row! survey.stackoverflow.co/2025
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José Valim
@josevalim
Nov 29, 2023
I was walking down the road when a parrot landed on my shoulder (and then moved around). I was told it is a *king parrot*. I guess game recognizes game. 😂
26K
José Valim
@josevalim
Aug 28, 2025
The Expert Language Server is live: github.com/elixir-lang/ex… - nightly builds available for alpha testing and contributors. Thank you to @flydotio, @_tauspace_, and @River for sponsoring the development so far!
GitHub - expert-lsp/expert: Official Elixir Language Server Protocol implementation
From github.com
114K
José Valim
@josevalim
Dec 19, 2024
Elixir v1.18 is out: elixir-lang.org/blog/2024/12/1… 🎄🍾 It is a fantastic release: type checking of function calls, Language Server listeners, built-in JSON, ExUnit improvements, IEx auto-reload, and more. See the announcement for examples and videos.
Elixir v1.18 released: type checking of calls, LSP listeners, built-in JSON, and more
From elixir-lang.org
40K
José Valim
@josevalim
Aug 19, 2025
Introducing Tidewave Web for Rails and Phoenix: a coding agent that runs in the browser alongside your web application, with full page and code context. Tidewave deeply integrates with your stack, from the database to the UI, making AI development more seamless and efficient.
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98K
José Valim
@josevalim
Dec 10, 2024
Elixir v1.18-rc.0 is out and it is a massive and beautiful release. More type system work, built-in JSON, language server listeners, parameterized and group tests, "mix format --migrate" and that's not even all:
Release v1.18.0-rc.0 · elixir-lang/elixir
From github.com
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