Frederic Branczyk

Ok I’ve done something that might be a little crazy. I’ve been designing a new keyboard together with Claude and I just sent it off to production. Fully custom pcb, fully preassembled. Pretty much 100% AI created with just my input and giving Claude all the tools to verify its own work.

I think there are a few leaps I’m making and opportunities for companies/products to be built, but I don’t think we’re far from giving agents money to spend. Some of it happens already implicitly but I think within a few months they will start signing up for services themselves and pay for them.

Had an incredible time at our Dash0 all company offsite in Dubrovnik! Very exciting things in the works, and now it’s time to ship!🚢 😎

Using Amp Code on my phone from within my Waymo while driving to pick up my badge for “The AI conference” is the most 2026 thing I've done this year.

About to start my talk on performance engineering in the age of AI. Come and see it at WeAreDevelopers at stage 3!

In sunny San Jose this week for WeAreDevelopers. Who else is gonna be there? Also don’t have dinner plans yet today if you’re up for talking observability, performance and/or GPUs 🤓

At signals conf today, come say hi! Fun fact: the prep dinner for Signals Conf is where the idea for the Polar Signals <> Dash0 acquisition idea originated!

🚀 Polar Signals is Joining Dash0! 🧊 I could not be more excited to bring continuous profiling to even more companies as well as take our database and make it the best foundation it can be for all of Observability! www.polarsignals.com/blog/posts/2...

We have an open position for a student worker on the Firefox Networking team in Germany. We work on the full stack, from high level HTTP all the way down to TCP / UDP. Some C++, some Rust. Help us fight for an open internet for everyone. https://www.mozilla.org/en-US/careers/position/gh/8068406/

The Polar Signals profiler got a major upgrade. New dashboard, and everything is faster and smoother 🚀 We can’t wait for you to try it out! Here's what's new and how we did it: www.polarsignals.com/blog/posts/2...

Less context, better answers. 🔥 The new @polarsignals.com MCP makes smaller, more effective tool calls and iterates on what's actually worth querying. www.polarsignals.com/blog/posts/2...

Super excited to be experimenting with GPU-accelerated query execution (starting with decoding data on-GPU). We're still learning, but this is very exciting!

Ever wondered how a profiler knows which JavaScript function is hot when V8 compiles your code three different ways? Brennan went deep on unwinding and symbolizing V8 stacks across Sparkplug, Maglev, and TurboFan. The detective work behind every flame graph. 🔥 www.polarsignals.com/blog/posts/2...

Today we're launching the missing piece for GPU profiling in open source. The team has really outdone themselves in this one!

Got to troubleshoot what is probably one of the weirdest/most interesting bugs of my career yesterday and today. This one is probably going to deserve a write-up. Thankfully, we heavily dogfood our product, and as a result, customers had no impact.

We care *deeply* (pun intended) about producing the highest quality data for our customers. Incomplete stacks are never great, check out this super fascinating write-up from Tommy on how we vastly improved unwinding of deep python stacks.

Been lightly using a gemma4 26B model with an mlx backend via lm studio and wow it’s incredibly good! Just for some random small chats, but it’s been surprisingly good.

Our new website was created by our friends at pixelpoint.io, highly recommend working with them, they did a phenomenal job! Let me know if you want an intro! polarsignals.com

Really excited about what Polar Signals Cloud can do in a world where more and more code is written by LLMs. Give the LLMs the context they deserve! Also: Check out our new slick website!

I wrote about our team’s code review norms, which I am grateful are deeply human.

We've been working on a major schema migration at @polarsignals.com that has unlocked some pretty wild improvements. Apart from a 50% (!!) reduction in storage size thanks to logical compression in vortex.dev, there has been a dramatic improvement in query performance.

Hey @anthropic.com, hear me out: Multi-player claude code sessions. Sharing the same claude code session with my team.

TypeScript users can now enjoy Polar Signals Cloud to the fullest as well!

Shout out to Cursor for (to my knowledge) being the only MCP OAuth client that implements token refreshes! It makes a huge difference for users not having to re-auth all the time.

/buddy off Fun idea, but in practice, annoying and distracting.

We caught up with @bwplotka.dev at KubeCon EU. He's excited about semantic conventions across OTel and Prometheus finally becoming practical, and AI tools changing how open source is built. #KubeCon #OpenTelemetry #Prometheus youtube.com/shorts/QF3Yk...

Periodic reminder that O(1) is not equal O(1). Your constant matters.

A historic step for profiling within the OpenTelemetry project!

We caught up with Felix earlier this week at KubeCon EU, and TODAY he's presenting on the OpenTelemetry profiling signal reaching alpha, together with Florian. 📍 15:15, Hall 8, Room F Profiling as a first-class signal in OTel is huge. Don't miss it!

@metalmatze.de and I are at KubeCon! Hit us up if you wanna chat observability and continuous profiling!

I'll be at KubeCon next week. I don't have many slots left, but if you wanna hang out or chat about profiling and all things observability! DM me, and I'm happy to find time!

At #QConLondon? Check out @asubiotto.com's talk on how we test our database(s) in an effort to not let critical bugs ever hit production! Today at 10:35AM GMT. Location Windsor (5th Fl.) Track Native Languages - and Wasm qconlondon.com/presentation...

See profiling data right in your IDE/texteditor! (*and* make it available to your favorite AI)

This one has been a long time coming, excited to finally have shipped it!

If you ever wondered how profilers work 🤓

I'm happy to share that I will be speaking at #QConLondon on March 16 on deterministic simulation testing at Polar Signals. For anyone interested in attending: SPEAKER60QUK26 for £60 off

We just made it even more convenient to use Polar Signals with your favorite AI!

Another @github.com outage? Actions not starting/reported.

#FOSDEM was a ton of fun this year! Check out our recap if you missed any of our talks! (also FOSDEM is always a better time if you don't catch fosdem-flu which thankfully I didn't this year!)

Do I know anyone who has successfully set up Google Workspace user sync and SSO with Azure (as in Google Workspace is the primary)? I could use some help (support has not been helpful).

Brennan telling #FOSDEM how to use Parca to profile Rust workloads!

Polar Signals at #FOSDEM 2026 day 2! Both talks in the Rust room. Profiling Rust applications with Parca Brennan at 12:30 @ UB2.252A (Rust) fosdem.org/2026/schedul... Frederic at 16:00 @ UB2.252A (Rust) Random seeds and state machines: An approach to DST in Rust fosdem.org/2026/schedul...

@thorfour.dev telling #FOSDEM about our new rust-based database (with lots of open source inside!)

@gnurizen.bsky.social showing us how we can get a memory profile just when your process is about to be killed by the OOM killer.