Tobias Pfeiffer
@pragtob.bsky.social
Likes people. Teamplayer, Open Source Enthusiast, Software Developer, Benchmarker, TDDer, Speaker. Elixir, Ruby, JavaScript. Loves green.
Reposted by Tobias Pfeiffer
Credo 1.7.15 is out now, with massive perf improvements for large #ElixirLang codebases.
Got a few PRs in flight for Credo which cumulatively dropped the runtime from ~33 seconds down to ~9 on our 3500 file #ElixirLang codebase at work. 😁
December 26, 2025 at 1:18 PM
Credo 1.7.15 is out now, with massive perf improvements for large #ElixirLang codebases.
Reposted by Tobias Pfeiffer
Don't miss the standing ovation at the end..
Saša Jurić brought "Tell me a story" to the Goatmire stage and people have been asking for the video ever since. Phenomenal contents, delightful presentation. A must.
goatmire.bold.video/v/ex36w
#goatmire #elixirlang
Saša Jurić brought "Tell me a story" to the Goatmire stage and people have been asking for the video ever since. Phenomenal contents, delightful presentation. A must.
goatmire.bold.video/v/ex36w
#goatmire #elixirlang
Tell me a story - Saša Jurić
Not quite like any other presentation. One to behold.
goatmire.bold.video
December 22, 2025 at 9:42 AM
Don't miss the standing ovation at the end..
Saša Jurić brought "Tell me a story" to the Goatmire stage and people have been asking for the video ever since. Phenomenal contents, delightful presentation. A must.
goatmire.bold.video/v/ex36w
#goatmire #elixirlang
Saša Jurić brought "Tell me a story" to the Goatmire stage and people have been asking for the video ever since. Phenomenal contents, delightful presentation. A must.
goatmire.bold.video/v/ex36w
#goatmire #elixirlang
Reposted by Tobias Pfeiffer
Sanne was early on our roster, one of those OG supporters and she brought a lovely dive into BEAM scheduling.
goatmire.bold.video/v/wmz7e
#goatmire #elixirlang
goatmire.bold.video/v/wmz7e
#goatmire #elixirlang
BEAM Internals: Understanding the Erlang Scheduler - Sanne Kalkman
Until recently, I took the magic of the BEAM for granted. Like many of us, I spawned processes, passed messages and happily used concurrency without much thought about how any of it really worked.…
goatmire.bold.video
December 23, 2025 at 10:00 AM
Sanne was early on our roster, one of those OG supporters and she brought a lovely dive into BEAM scheduling.
goatmire.bold.video/v/wmz7e
#goatmire #elixirlang
goatmire.bold.video/v/wmz7e
#goatmire #elixirlang
Reposted by Tobias Pfeiffer
Also available on YouTube if you prefer: youtu.be/sEqDOin9bZM
Functioning Among Humans - Tobias Pfeiffer
In the development world, most people are striving for technical excellence: better code, faster run times, more convenient interfaces, better databases… But is that really what helps us create…
youtu.be
December 17, 2025 at 1:18 PM
Also available on YouTube if you prefer: youtu.be/sEqDOin9bZM
Reposted by Tobias Pfeiffer
Tobi gave us his thoughts on how we can function together as humans. And that occasionally helps for building software is what I hear.
goatmire.bold.video/v/wy8pe
#goatmire #elixirlang
goatmire.bold.video/v/wy8pe
#goatmire #elixirlang
Functioning Among Humans - Tobias Pfeiffer
In the development world, most people are striving for technical excellence: better code, faster run times, more convenient interfaces, better databases… But is that really what helps us create…
goatmire.bold.video
December 17, 2025 at 1:18 PM
Tobi gave us his thoughts on how we can function together as humans. And that occasionally helps for building software is what I hear.
goatmire.bold.video/v/wy8pe
#goatmire #elixirlang
goatmire.bold.video/v/wy8pe
#goatmire #elixirlang
Reposted by Tobias Pfeiffer
CFT Open: Code BEAM Lite Stockholm, May 18 2026! Share your Erlang/Elixir/Gleam expertise. Deadline: Feb 16. First-time speakers welcome! Submit: sessionize.com/code-beam-li...
December 18, 2025 at 7:18 AM
CFT Open: Code BEAM Lite Stockholm, May 18 2026! Share your Erlang/Elixir/Gleam expertise. Deadline: Feb 16. First-time speakers welcome! Submit: sessionize.com/code-beam-li...
Reposted by Tobias Pfeiffer
Building Phoenix at scale? ElixirConf EU 2026 wants your insights.
Topics: Advanced Contexts, performance optimization, LiveView architecture, testing strategies.
CFT closes Jan 6 www.elixirconf.eu#cft
Topics: Advanced Contexts, performance optimization, LiveView architecture, testing strategies.
CFT closes Jan 6 www.elixirconf.eu#cft
December 4, 2025 at 1:05 PM
Building Phoenix at scale? ElixirConf EU 2026 wants your insights.
Topics: Advanced Contexts, performance optimization, LiveView architecture, testing strategies.
CFT closes Jan 6 www.elixirconf.eu#cft
Topics: Advanced Contexts, performance optimization, LiveView architecture, testing strategies.
CFT closes Jan 6 www.elixirconf.eu#cft
Reposted by Tobias Pfeiffer
Framework greatly expand their open source event and Linux distribution sponsorships
#Framework #OpenSource #Linux
#Framework #OpenSource #Linux
Framework greatly expand their open source event and Linux distribution sponsorships
Framework Computer BV have announced a nice big expansion of their sponsorship program with many open source events and Linux distributions benefiting from it.
www.gamingonlinux.com
December 9, 2025 at 10:32 AM
Framework greatly expand their open source event and Linux distribution sponsorships
#Framework #OpenSource #Linux
#Framework #OpenSource #Linux
Reposted by Tobias Pfeiffer
Check out this Code BEAM Lite Stockholm talk on 9 years of Benchee by @pragtob.bsky.social ! youtu.be/Dlo7gJGUrQo?...
Keynote: Benchee: 9 Years of Benchmarking on the BEAM -Tobias Pfeiffer | Code BEAM Lite Sto 2024
YouTube video by Code Sync
youtu.be
December 2, 2025 at 12:53 PM
Check out this Code BEAM Lite Stockholm talk on 9 years of Benchee by @pragtob.bsky.social ! youtu.be/Dlo7gJGUrQo?...
As a reminder, the Ruby User Group is meeting this Thursday at 19:00!
We'll talk about RubyLLM and Effective Ruby!
There will be food and drinks - first come, first served!
You can find more details as usual on our website: www.rug-b.de/events/decem...
We'll talk about RubyLLM and Effective Ruby!
There will be food and drinks - first come, first served!
You can find more details as usual on our website: www.rug-b.de/events/decem...
RUG::B - December Meetup 2025
RUG::B - December Meetup 2025 - RUG::B—Ruby User Group Berlin
www.rug-b.de
December 2, 2025 at 12:37 PM
As a reminder, the Ruby User Group is meeting this Thursday at 19:00!
We'll talk about RubyLLM and Effective Ruby!
There will be food and drinks - first come, first served!
You can find more details as usual on our website: www.rug-b.de/events/decem...
We'll talk about RubyLLM and Effective Ruby!
There will be food and drinks - first come, first served!
You can find more details as usual on our website: www.rug-b.de/events/decem...
Reposted by Tobias Pfeiffer
ElixirConf EU have published their Call for Talks. Help keep the community's speaker scene fresh. Throw your body into the mix.
I'll throw something in there. What would you like? Serious production? Weird and creative? Uniquely BEAM things? ONLY NERVES?
www.elixirconf.eu
#elixirlang
I'll throw something in there. What would you like? Serious production? Weird and creative? Uniquely BEAM things? ONLY NERVES?
www.elixirconf.eu
#elixirlang
ElixirConf EU 2026 on 23-24 April, Málaga & Virtual
Every year, hundreds of developers with a passion for Elixir come together to learn about, share and inspire the progression of the Elixir ecosystem. Our events frequently include members of the core…
www.elixirconf.eu
December 2, 2025 at 8:47 AM
ElixirConf EU have published their Call for Talks. Help keep the community's speaker scene fresh. Throw your body into the mix.
I'll throw something in there. What would you like? Serious production? Weird and creative? Uniquely BEAM things? ONLY NERVES?
www.elixirconf.eu
#elixirlang
I'll throw something in there. What would you like? Serious production? Weird and creative? Uniquely BEAM things? ONLY NERVES?
www.elixirconf.eu
#elixirlang
Reposted by Tobias Pfeiffer
A highly experienced beginner. Ellyse Cedeno took us through her journey with getting into hardware using Nerves after many years of Elixir development.
No reason to be afraid of NervesConf EU. Keep an eye out for more from Ellyse, she is awesome.
video.goatmire.com/v/qe8qw
#elixirlang
No reason to be afraid of NervesConf EU. Keep an eye out for more from Ellyse, she is awesome.
video.goatmire.com/v/qe8qw
#elixirlang
Overcoming my hardware phobia and getting the Nerves - Ellyse Cedeno
I've always been afraid of hardware, all thumbs, and away from the safe world of programming and mathematics. When I first heard Elixir, my favourite language, worked on embedded systems, I was…
video.goatmire.com
December 2, 2025 at 11:01 AM
A highly experienced beginner. Ellyse Cedeno took us through her journey with getting into hardware using Nerves after many years of Elixir development.
No reason to be afraid of NervesConf EU. Keep an eye out for more from Ellyse, she is awesome.
video.goatmire.com/v/qe8qw
#elixirlang
No reason to be afraid of NervesConf EU. Keep an eye out for more from Ellyse, she is awesome.
video.goatmire.com/v/qe8qw
#elixirlang
Reposted by Tobias Pfeiffer
It is time. I was going to hold off, release in bulk. When all were ready. Stina suggested an advent calendar. And I try to heed her wisdom.
Goatcember begins!
Marc Lainez gave us this fantastic start on his teams work on The Nerves Car.
goatmire.bold.video/v/ywpqe
#elixirlang
Goatcember begins!
Marc Lainez gave us this fantastic start on his teams work on The Nerves Car.
goatmire.bold.video/v/ywpqe
#elixirlang
A Nerves Car - Marc Lainez
In december 2023, Loïc, Thibault and Marc embarked on a journey to convert a 2007 VW Polo into an EV. At Elixirconf 2024, they presented their early prototype showing the car's wheels spinning and…
goatmire.bold.video
December 1, 2025 at 9:56 PM
It is time. I was going to hold off, release in bulk. When all were ready. Stina suggested an advent calendar. And I try to heed her wisdom.
Goatcember begins!
Marc Lainez gave us this fantastic start on his teams work on The Nerves Car.
goatmire.bold.video/v/ywpqe
#elixirlang
Goatcember begins!
Marc Lainez gave us this fantastic start on his teams work on The Nerves Car.
goatmire.bold.video/v/ywpqe
#elixirlang
Reposted by Tobias Pfeiffer
I'm looking for a remote Rust/Elixir role (EU-friendly timezones, US East is ok).
I have 7 years of #rustlang, 9 years of #elixirlang, 20+ years of #linux.
I have over 20 years of experience as a professional developer, and I've been working remotely for 12 years.
I have 7 years of #rustlang, 9 years of #elixirlang, 20+ years of #linux.
I have over 20 years of experience as a professional developer, and I've been working remotely for 12 years.
Asciinema with Marcin Kulik :: Rustacean Station
Come journey with us into the weird, wonderful, and wily world of Rust.
rustacean-station.org
November 28, 2025 at 1:50 PM
I'm looking for a remote Rust/Elixir role (EU-friendly timezones, US East is ok).
I have 7 years of #rustlang, 9 years of #elixirlang, 20+ years of #linux.
I have over 20 years of experience as a professional developer, and I've been working remotely for 12 years.
I have 7 years of #rustlang, 9 years of #elixirlang, 20+ years of #linux.
I have over 20 years of experience as a professional developer, and I've been working remotely for 12 years.
Reposted by Tobias Pfeiffer
Hi Elixir friends,
After 3 years on Hologram full-time (transpiles Elixir to the browser), I'm at a crossroads.
60+ hr weeks balancing contracts & dev isn't sustainable.
Where we are & how you can help: hologram.page/blog/seeking...
Even sharing helps 💜
#Hologram #Elixir #ElixirLang #BEAM #WebDev
After 3 years on Hologram full-time (transpiles Elixir to the browser), I'm at a crossroads.
60+ hr weeks balancing contracts & dev isn't sustainable.
Where we are & how you can help: hologram.page/blog/seeking...
Even sharing helps 💜
#Hologram #Elixir #ElixirLang #BEAM #WebDev
November 27, 2025 at 9:11 PM
Hi Elixir friends,
After 3 years on Hologram full-time (transpiles Elixir to the browser), I'm at a crossroads.
60+ hr weeks balancing contracts & dev isn't sustainable.
Where we are & how you can help: hologram.page/blog/seeking...
Even sharing helps 💜
#Hologram #Elixir #ElixirLang #BEAM #WebDev
After 3 years on Hologram full-time (transpiles Elixir to the browser), I'm at a crossroads.
60+ hr weeks balancing contracts & dev isn't sustainable.
Where we are & how you can help: hologram.page/blog/seeking...
Even sharing helps 💜
#Hologram #Elixir #ElixirLang #BEAM #WebDev
The mac will occasionally just kinda forget that it has an audio jack and that port won't be recognized. So, no music from my speakers. Can plug them into the audio port on my microphone and they work, so it's not the speakers.
Needs a reboot to fix.
"It just works"
#TobiOnAMac
Needs a reboot to fix.
"It just works"
#TobiOnAMac
November 27, 2025 at 9:26 AM
The mac will occasionally just kinda forget that it has an audio jack and that port won't be recognized. So, no music from my speakers. Can plug them into the audio port on my microphone and they work, so it's not the speakers.
Needs a reboot to fix.
"It just works"
#TobiOnAMac
Needs a reboot to fix.
"It just works"
#TobiOnAMac
The Ruby User Group Berlin will happen next week 4th of December at Ablefy !
Talks by Dennis and Carmine!
We'll talk about RubyLLM and Effective Ruby!
www.rug-b.de/events/decem...
Talks by Dennis and Carmine!
We'll talk about RubyLLM and Effective Ruby!
www.rug-b.de/events/decem...
RUG::B - December Meetup 2025
RUG::B - December Meetup 2025 - RUG::B—Ruby User Group Berlin
www.rug-b.de
November 26, 2025 at 1:01 PM
The Ruby User Group Berlin will happen next week 4th of December at Ablefy !
Talks by Dennis and Carmine!
We'll talk about RubyLLM and Effective Ruby!
www.rug-b.de/events/decem...
Talks by Dennis and Carmine!
We'll talk about RubyLLM and Effective Ruby!
www.rug-b.de/events/decem...
Reposted by Tobias Pfeiffer
Announcing the Gem Fellowship, a grant program for improvements to Ruby-related open source projects. gem.coop/fellowship/ Want to improve your favorite gem? Submit a proposal, starting next month.
gem.coop
gem.coop
November 21, 2025 at 12:20 AM
Announcing the Gem Fellowship, a grant program for improvements to Ruby-related open source projects. gem.coop/fellowship/ Want to improve your favorite gem? Submit a proposal, starting next month.
Reposted by Tobias Pfeiffer
Strong recommendaction for Eloquent Ruby pragprog.com/titles/eruby....
November 19, 2025 at 5:22 PM
Strong recommendaction for Eloquent Ruby pragprog.com/titles/eruby....
Reposted by Tobias Pfeiffer
Oh fun. Cloudflare is down. And I wondered already why my CI is failing (it can't download ObanPro which is cached by them)
November 18, 2025 at 1:24 PM
Oh fun. Cloudflare is down. And I wondered already why my CI is failing (it can't download ObanPro which is cached by them)
Reposted by Tobias Pfeiffer
We didn’t expect such a big response this year, and we love to see it. If you haven’t filled it in yet, you now have time until November 18.
💜 elixir-survey.typeform.com/2025-edition
#elixir #elixirlang #myelixirstatus #elixirprogramming
💜 elixir-survey.typeform.com/2025-edition
#elixir #elixirlang #myelixirstatus #elixirprogramming
November 14, 2025 at 10:56 AM
Reposted by Tobias Pfeiffer
🚨 ElixirConf EU 2026 CFP is OPEN!
40+ speaker slots. 300+ attendees. Europe's biggest Elixir event.
We want your battle-tested knowledge on:
Phoenix at scale
Advanced LiveView patterns
& more
Built something ambitious with Elixir? Share it.
Submit here:
www.elixirconf.eu#cft
40+ speaker slots. 300+ attendees. Europe's biggest Elixir event.
We want your battle-tested knowledge on:
Phoenix at scale
Advanced LiveView patterns
& more
Built something ambitious with Elixir? Share it.
Submit here:
www.elixirconf.eu#cft
November 13, 2025 at 8:37 AM
🚨 ElixirConf EU 2026 CFP is OPEN!
40+ speaker slots. 300+ attendees. Europe's biggest Elixir event.
We want your battle-tested knowledge on:
Phoenix at scale
Advanced LiveView patterns
& more
Built something ambitious with Elixir? Share it.
Submit here:
www.elixirconf.eu#cft
40+ speaker slots. 300+ attendees. Europe's biggest Elixir event.
We want your battle-tested knowledge on:
Phoenix at scale
Advanced LiveView patterns
& more
Built something ambitious with Elixir? Share it.
Submit here:
www.elixirconf.eu#cft
Reposted by Tobias Pfeiffer
Gleam is entirely funded by sponsorship, and it has dropped over the last 3 months.
If you like Gleam please sponsor, or ask your employer to sponsor. Every contribution is meaningful, no matter how small.
Thank you so much! 💖
github.com/sponsors/gle...
If you like Gleam please sponsor, or ask your employer to sponsor. Every contribution is meaningful, no matter how small.
Thank you so much! 💖
github.com/sponsors/gle...
Sponsor @gleam-lang on GitHub Sponsors
Support friendly, fun, and scalable type-safe programming with Gleam!
github.com
October 24, 2025 at 9:47 AM
Gleam is entirely funded by sponsorship, and it has dropped over the last 3 months.
If you like Gleam please sponsor, or ask your employer to sponsor. Every contribution is meaningful, no matter how small.
Thank you so much! 💖
github.com/sponsors/gle...
If you like Gleam please sponsor, or ask your employer to sponsor. Every contribution is meaningful, no matter how small.
Thank you so much! 💖
github.com/sponsors/gle...
Reposted by Tobias Pfeiffer
My conference report for Goatmire Elixir 2025. From the perspective of the organizer. I hope to see other people share long-form notes on their conference experience. There cannot be too much blogging. Also, lots of nice pictures by Petter Boström.
underjord.io/conference-r...
#elixirlang
underjord.io/conference-r...
#elixirlang
Conference Report: Goatmire Elixir 2025
The quiet was unsettling. The lack of concrete things to do was stressful. Me and my wife had been fretting and flitting around the house for most of the day making sure everything was staged, that…
underjord.io
September 22, 2025 at 2:21 PM
My conference report for Goatmire Elixir 2025. From the perspective of the organizer. I hope to see other people share long-form notes on their conference experience. There cannot be too much blogging. Also, lots of nice pictures by Petter Boström.
underjord.io/conference-r...
#elixirlang
underjord.io/conference-r...
#elixirlang
Reposted by Tobias Pfeiffer
Who do you know who wants to come work full time on #ElixirLang OSS tooling? (Boosts appreciated!)
jump.ai/careers?ashb...
#ElixirJobs
jump.ai/careers?ashb...
#ElixirJobs
Careers at Jump | Jump
Jump is empowering financial advisors and their clients to thrive in the age of AI. We're growing incredibly quickly with a team that comes from Google, Stripe, JP Morgan, BILL, Nitrogen, Harvard, Sta...
jump.ai
November 7, 2025 at 12:41 AM
Who do you know who wants to come work full time on #ElixirLang OSS tooling? (Boosts appreciated!)
jump.ai/careers?ashb...
#ElixirJobs
jump.ai/careers?ashb...
#ElixirJobs