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Jonas Kruckenberg

@jonaskruckenberg.de
328 followers 215 following 617 posts

building the next operating system @tc39.es Invited Expert | Software Engineer @mainmatter.com

past: tauri github.com/JonasKruckenberg

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Jonas Kruckenberg @jonaskruckenberg.de · 29/09/2026
we need to stop frontend framework development right now, blanket government ban on javascript and regulate the big players
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Mainmatter @mainmatter.com · 29/09/2026
This Thursday, we're hosting a free AMA on migrating C/C++ to idiomatic Rust. Our @jonaskruckenberg.de, author of the C-to-Rust migration book, and @marcoow.bsky.social will answer your questions, drawing on our experience running large-scale C-to-Rust migrations. See you Thursday! 🙌 #rustlang
luma.com
C-to-Rust Migrations – AMA with Jonas Kruckenberg and Marco Otte-Witte · Luma
Securing and modernizing software is a top priority today. Tech debt and memory-safety bugs remain the largest sources of vulnerabilities, which is why teams…
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Pete 🙆‍♂️ @petelevasseur.com · 28/09/2026
proud to share that I was selected to serve on the Rust Project Leadership Council! my role's to represent the interests of the top-level Language team, and all sub-teams =)
Screenshot showing Pete LeVasseur as the Language team representative to the Rust Project Leadership Council.
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nia (cia asset) @nia.is.fckn.gay · 27/09/2026
dhh please fuck off we don't want your fascist kind in rust either 💞
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Michael Gattozzi @mgattozzi.dev · 27/09/2026
I do not want him in the Rust community fucking hell.
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Jonas Kruckenberg @jonaskruckenberg.de · 28/09/2026
come work with me! work with dome of the biggest companies on some of the hardest problems! mainmatter.notion.site/Rust-Enginee...
mainmatter.notion.site
Rust Engineering Consultant 2026 | Notion
Please email jobs+rust@mainmatter.com with your résumé and availability.
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Mainmatter @mainmatter.com · 22/09/2026
On Oct 1, we're hosting a free AMA on migrating C/C++ to idiomatic Rust. Our @jonaskruckenberg.de, author of the C-to-Rust migration book, and @marcoow.bsky.social will answer your questions, drawing on our experience running large-scale C-to-Rust migrations. Registration link below. #rustlang
luma.com
C-to-Rust Migrations – AMA with Jonas Kruckenberg and Marco Otte-Witte · Luma
Securing and modernizing software is a top priority today. Tech debt and memory-safety bugs remain the largest sources of vulnerabilities, which is why teams…
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Jonas Kruckenberg @jonaskruckenberg.de · 18/09/2026
just saw a couple come off the lake with their stand up paddles, he was literally chatting to chatgpt the entire time… we need to bring back bullying
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Jonas Kruckenberg @jonaskruckenberg.de · 17/09/2026
@kevin-gallant.bsky.social in other sad rustconf news: i wore my @iroh.computer cap everyday the last week, then promptly now lost… rip 🫡
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Mainmatter @mainmatter.com · 17/09/2026
Mainmatter's founder @marcoow.bsky.social is on stage at @emberfest.eu to talk about agentic frontend engineering – where are we, what's coming, where does all this lead in the long term?
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Jonas Kruckenberg @jonaskruckenberg.de · 16/09/2026
hell yeah!
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Mainmatter @mainmatter.com · 16/09/2026
Three new Rust workshops now in our trainings catalog, ready to book for your team: Async Rust, Advanced Rust API design, and Procedural Macros. All available on-site or remote. Read more in the thread 🧵 #rustlang
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EuroRust @eurorust.eu · 14/09/2026
This year, you can find @jonaskruckenberg.de and @mainmatter.com at their Wasm workshop. Containers Are Dead: Long Live WebAssembly, is a hands-on workshop on building server-side Rust apps with Wasm! 🦀 Get your ticket now 👉 eurorust.eu/workshops/co... #RustLang #wasm
eurorust.eu
Containers Are Dead: Long Live WebAssembly | EuroRust 2026
In this hands-on workshop, you will learn how to build such an efficient, portable, and secure server-side application using Rust and WebAssembly. We'll cover everything from foundational concepts to…
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Mainmatter @mainmatter.com · 14/09/2026
There are still some tickets left for our workshop with @jonaskruckenberg.de at EuroRust! Get yours now 🙌
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Mainmatter @mainmatter.com · 14/09/2026
On October 1st, we’re hosting a free AMA on migrating C/C++ to idiomatic Rust. Our @marcoow.bsky.social and @jonaskruckenberg.de, author of the "C to Rust Migration Book”, will answer your toughest questions. Register now 👉 luma.com/m2gplobz #rustlang
luma.com
C-to-Rust Migrations – AMA with Luca Palmieri and Jonas Kruckenberg · Luma
Securing and modernizing software is a top priority today. Tech debt and memory-safety bugs remain the largest sources of vulnerabilities, which is why teams…
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Jonas Kruckenberg @jonaskruckenberg.de · 14/09/2026
new and improved! this workshop was sold out both times we ran it! make sure to reserve your spot now
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EuroRust @eurorust.eu · 14/09/2026
Let’s go back in time to last year’s EuroRust! ⏰ In Paris, @jonaskruckenberg.de explored how panic! really works under the hood. From stack unwinding and Drop to what actually happens when your program crashes. Check out the talk 👉 www.youtube.com/watch?v=mWCV... #EuroRust #RustLang
youtube.com
Panic! At The Disk Oh! - Jonas Kruckenberg | EuroRust 2025
*Panic! At The Disk Oh! - Jonas Kruckenberg at EuroRust 2025* Unwrapping results, assertions, divide by zero: we've all seen our Rust programs panic and crash. But have you ever wondered how that…
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Mainmatter @mainmatter.com · 09/09/2026
The second chapter of our "C to Rust Migration Book", written by @jonaskruckenberg.de, is on its way. The first chapter presented the basics. In the second chapter, learn how to make the most of tools like Miri, @lpalmieri.com's cheadergen, lldb, and gbd. Stay tuned! #RustLang
mainmatter.com
The C to Rust Migration Book - Mainmatter
Learn how to migrate production C codebases to safe, idiomatic Rust one module at a time.
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Jonas Kruckenberg @jonaskruckenberg.de · 08/09/2026
another full @mainmatter.com workshop!! very exciting
RustConf workshop room filled with people excited to learn about migrating C to Rust
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Micah Warren @micah541.bsky.social · 08/09/2026
cloak and dagger navier stokes cims.nyu.edu/~tristanb/st...
cims.nyu.edu
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Jonas Kruckenberg @jonaskruckenberg.de · 07/09/2026
come say hi if you’re around!!
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Mainmatter @mainmatter.com · 03/09/2026
Did you know C's int isn't actually guaranteed to be Rust's i32? They line up almost always, except on niche architectures. Rust decided that "almost" is close enough. Read about what this means in our free C-to-Rust migration course: mainmatter.com/c-to-rust-mi... #RustLang
mainmatter.com
The C to Rust Migration Book - Mainmatter
Learn how to migrate production C codebases to safe, idiomatic Rust one module at a time.
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Jonas Kruckenberg @jonaskruckenberg.de · 01/09/2026
rare PSA: we @mainmatter.com have our Rust engineers free right now! A client paused on budget timing, so they are coming straight off a highly complex c2rust project! some of theee best engineers I know, looking for the gnarliest problems you’ve got! 👀 DM me if your company has those!
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Jonas Kruckenberg @jonaskruckenberg.de · 02/09/2026
hell yeah!
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Marco Otte-Witte @marcoow.bsky.social · 01/09/2026
.@mainmatter.com has an all-star Rust team available immediately. After some budget hiccups at one of our clients, we happen to have a well-established team of Rust experts around that's ready to go immediately. 1/🧵
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Jonas Kruckenberg @jonaskruckenberg.de · 01/09/2026
rare PSA: we @mainmatter.com have our Rust engineers free right now! A client paused on budget timing, so they are coming straight off a highly complex c2rust project! some of theee best engineers I know, looking for the gnarliest problems you’ve got! 👀 DM me if your company has those!
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Jonas Kruckenberg @jonaskruckenberg.de · 31/08/2026
this is your once in a lifetime opportunity to ask us all the questions people! its going to be lots of fun!
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Mainmatter @mainmatter.com · 31/08/2026
On October 1st, we’re hosting a free AMA with our @lpalmieri.com, @jonaskruckenberg.de, author of the C-to-Rust migration book, and @marcoow.bsky.social, to answer your questions on migrating C/C++ to idiomatic Rust. Register now 👉 luma.com/m2gplobz #rustlang
luma.com
C-to-Rust Migrations – AMA with Luca Palmieri and Jonas Kruckenberg · Luma
Securing and modernizing software is a top priority today. Tech debt and memory-safety bugs remain the largest sources of vulnerabilities, which is why teams…
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Mainmatter @mainmatter.com · 12/08/2026
Our @jonaskruckenberg.de and @lpalmieri.com will be at @rustconf.com. Jonas will talk about learnings from our work migrating RediSearch from C to Rust. Luca will hold a workshop on C to Rust migrations, beyond the basics. See you in Montreal! 👋 Get your ticket 👉 rustconf.com
rustconf.com
RustConf 2026 - September 8-11 | Montreal + Online
The original Rust programming language conference. Join Rustaceans in Montréal & online, September 8-11, 2026 for talks, workshops, and more.
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Jonas Kruckenberg @jonaskruckenberg.de · 10/08/2026
@jonkuperman.com is the best! go work with him!
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Rob Palmer @robpalmer.bsky.social · 10/08/2026
We're hiring a Technical Product Manager for Web Platform & Frameworks infrastructure at Bloomberg in New York. You'll be working with me and @jonkuperman.com plus a whole bunch of folks excited by web technologies ✨ Feel free to DM with questions. bloomberg.avature.net/careers/JobD...
bloomberg.avature.net
Technical Product Manager - Web Platform & Frameworks - CTO Office
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Mainmatter @mainmatter.com · 10/08/2026
A while back, our @lpalmieri.com sat down with @bravit.bsky.social and @rustrover.jetbrains.com to dig into the practical realities of C/C++ to Rust migrations. If you missed it, you can check it out on YouTube! 📺 www.youtube.com/watch?v=_Ltg... #RustLang
youtube.com
How do you rewrite C/C++ projects to Rust?
Migrating memory from codebases (C, C++, Zig) to Rust is quite a hot topic these days! In this livestream, Vitaly Bragilevsky is joined by Luca Palmieri (Principal Engineering Consultant at…
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Mainmatter @mainmatter.com · 06/08/2026
Rewriting a C codebase in Rust is hard, and it's easy to get wrong. We’re hosting a free AMA with our @lpalmieri.com and @jonaskruckenberg.de, author of the C-to-Rust migration book, to answer your questions on migrating C/C++ to idiomatic Rust. Register now 👉 luma.com/m2gplobz #rustlang
luma.com
C-to-Rust Migrations – AMA with Luca Palmieri and Jonas Kruckenberg · Luma
Securing and modernizing software is a top priority today. Tech debt and memory-safety bugs remain the largest sources of vulnerabilities, which is why teams…
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Reposted by Jonas Kruckenberg
Andaedalus @andaedalus.bsky.social · 30/07/2026
How have we had keyboard innovations like the Windows key (lol) or the Fn key, but still haven't made the Caps Lock key change the capitalization of highlighted text?? If I highlight a sentence and hit Caps Lock, it should cycle through ALL CAPS, all lower, And Title Case like come ONNNNN
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EuroRust @eurorust.eu · 21/07/2026
We've added a new Embedded Rust workshop to the schedule! 🦀 Join Björn and @domenicquirl.bsky.social for a hands-on session with the Embassy framework, wiring your own hardware prototypes on a breadboard. No embedded or async experience needed! ✨ 👉 eurorust.eu/workshops/ha... #EuroRust26 #RustLang
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Jonas Kruckenberg @jonaskruckenberg.de · 28/07/2026
huh, seems like I just wrote the fastest async mpsc queue in existence… fun!
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Quinn Slobodian @quinnslobodian.com · 26/07/2026
you're telling me a kekius maximus meme generator has zero value www.bloomberg.com/news/article...
bloomberg.com
SpaceX at $100 Would Imply Zero AI Value, Says Morgan Stanley
The selloff in SpaceX shares has driven the stock near a level that would imply investors are assigning no value to its artificial intelligence business, according to analysts at Morgan Stanley.
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Jonas Kruckenberg @jonaskruckenberg.de · 24/07/2026
Last year was a blast!! make sure to reserve your Impl Day ticket when you buy a conf ticket!
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AapoAlas @aapoalas.trynova.dev · 20/07/2026
So lately I've been having obscene amounts of fun during absolutely hair-brained and -raising FFI crimes between Rust and C++. "Look ma, no C ABI!" Just going in raw, binding to C++ ABIs, inheriting C++ classes, creating C++ template instances like std::function's, all that good jazz direct in Rust.
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Luca Casonato 🏳️‍🌈 @lcas.dev · 20/07/2026
So some of you may know that I am a huge train nerd. So it's only fitting that today I start my new job at @railway.com. Not to run trains (I'm no good at that), but to help build the cloud platform of the future! Choo choo! 🎉 🚄 🎉 🚄 🎉
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Jonas Kruckenberg @jonaskruckenberg.de · 13/07/2026
I‘m back and migrated to @npmx.dev PDS! 🥳
npmx.social
npmx.social - npmx
The official AT Protocol Personal Data Server (PDS) for the npmx community.
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Fractal Fir @fractalfir.bsky.social · 02/07/2026
I did a thing: github.com/FractalFir/c... (This is the entire rust compiler, converted to C - yes, it is functional).
github.com
GitHub - FractalFir/crustc: Entirety of `rustc`, translated to C.
Entirety of `rustc`, translated to C. . Contribute to FractalFir/crustc development by creating an account on GitHub.
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Jonas Kruckenberg @jonaskruckenberg.de · 27/06/2026
people IT HAPPENED after _3 years_ k23’s fork of cranelift has finally been deprecated in favor of upstream cranelift!!! huge shoutout to the team for their continued no_std work! github.com/JonasKrucken...
github.com
update to crates.io cranelift by JonasKruckenberg · Pull Request #852 · JonasKruckenberg/k23
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Rob Palmer @robpalmer.bsky.social · 27/06/2026
Bloomberg uses a lot of C++ & contributes to the standard as well as various industry conferences and libraries. I’m looking for an experienced engineer to join a distributed systems team in New York working on our core Deployment Infrastructure for the Bloomberg Terminal 🗽 🧵
Five engineers in a glass meeting room with a whiteboard wall
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pnpm @pnpm.io · 24/06/2026
Very early sneak peek to pnpr - the pnpm registry: pnpm.io/pnpr/
pnpm.io
Introduction | pnpm
pnpr is a pnpm-compatible npm registry server, written in Rust. It speaks the
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Jonas Kruckenberg @jonaskruckenberg.de · 21/06/2026
been a bit quiet recently, but back with a treat! k23 now has proper ISO images that you can boot at home!! #osdev
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The Rust Foundation @rustfoundation.org · 19/06/2026
🦀 Learn Rust from scratch in Barcelona: June 29 & 30, 15:00–20:00 at Cibernàrium 22@! Rust Foundation member @mainmatter.com is running a workshop at Upskilling Week. No prior experience needed. Complete it and earn a verifiable Rust Foundation Credly badge. mobileworldcapital.com/en/agenda/up...
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Jonas Kruckenberg @jonaskruckenberg.de · 18/06/2026
me and my airline standard meal, hanging in madrid! If youre traveling back from @webengineshackfest.org I will literally be here all day 🫠🫠
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Mainmatter @mainmatter.com · 17/06/2026
Meet our @jonaskruckenberg.de at @webengineshackfest.org in A Coruña, Galicia this week! If you're there too, make sure to say hi if you want to talk Rust or Wasm 🤝 Check out the full schedule 👇 webengineshackfest.org #RustLang #wasm
webengineshackfest.org
2026 Web Engines Hackfest
Web Platform community event for people working on the different engines (Chromium/Blink/V8, Safari/WebKit/JSC, Firefox/Gecko/SpiderMonkey, Servo, Ladybird), on the testing side (WPT, Test262), on spe...
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Rust Language @rust-lang.org · 28/05/2026
Rust 1.96.0 has been released! 🌈 🦀✨ This release includes assert_matches!(), new range types in core::range::*, and fixes for a medium and a low severity vulnerability in Cargo (that didn't affect crates​.io users). Check out the blog post for details: blog.rust-lang.org/2026/05/28/R...
blog.rust-lang.org
Announcing Rust 1.96.0 | Rust Blog
Empowering everyone to build reliable and efficient software.
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