Krzysztof Cieslak
@kcieslak.io
Artist 🎨 | Photographer 📷 | Globetrotter 🌍 | Speaker 🤹🏻♂️ | Author of Ionide 🚀 | Researcher @ Github Next 🔬| Co-creator of #GitHubCopilot and Copilot NES | Building the future of software development 💻
Pinned
Krzysztof Cieslak
@kcieslak.io
· Sep 7
👋 I’ve started new account - @kcieslak.space
📷 I’ll be using it with @flashes.blue for photography content - mostly travel, cycling, hiking etc.
💕 If you’re interested in stuff like that I’ll appreciate any follows and boosts.
📷 I’ll be using it with @flashes.blue for photography content - mostly travel, cycling, hiking etc.
💕 If you’re interested in stuff like that I’ll appreciate any follows and boosts.
I wonder... would there be any interest in some F# event / (un)conference in 2026?
I always wanted to do something similar to F# Creators Workshop (which @dsyme.bsky.social organised years ago in Cambridge) or Elm Camp (which has been for last couple of years)
#fsharp
I always wanted to do something similar to F# Creators Workshop (which @dsyme.bsky.social organised years ago in Cambridge) or Elm Camp (which has been for last couple of years)
#fsharp
January 21, 2026 at 6:53 PM
I wonder... would there be any interest in some F# event / (un)conference in 2026?
I always wanted to do something similar to F# Creators Workshop (which @dsyme.bsky.social organised years ago in Cambridge) or Elm Camp (which has been for last couple of years)
#fsharp
I always wanted to do something similar to F# Creators Workshop (which @dsyme.bsky.social organised years ago in Cambridge) or Elm Camp (which has been for last couple of years)
#fsharp
"Most vibe code projects are just tech debt factory"
my dude, any software development project is. AI actually has quite a great potential to help removing tech debt, this is great use case for Continuous AI.
my dude, any software development project is. AI actually has quite a great potential to help removing tech debt, this is great use case for Continuous AI.
January 21, 2026 at 6:38 PM
"Most vibe code projects are just tech debt factory"
my dude, any software development project is. AI actually has quite a great potential to help removing tech debt, this is great use case for Continuous AI.
my dude, any software development project is. AI actually has quite a great potential to help removing tech debt, this is great use case for Continuous AI.
Reposted by Krzysztof Cieslak
January 21, 2026 at 5:43 PM
How people are coming up with those imaginary scenarios?
In any sane organization developer merging change is always responsible for the code - it doesn't matter if he raw do...coded thing as it was 2020 or vibe coded it.
AI is just tool - nothing less and nothing more than that.
In any sane organization developer merging change is always responsible for the code - it doesn't matter if he raw do...coded thing as it was 2020 or vibe coded it.
AI is just tool - nothing less and nothing more than that.
Actual Engineering Manager here.
Everyone talks about Vibe Coding, but I don't hear a lot about Vibe Debugging. My nightmare is that something burps out a mess of code and *no one is responsible for it*. If one of my people writes it... well they get to fix it. If no one writes it.......
Everyone talks about Vibe Coding, but I don't hear a lot about Vibe Debugging. My nightmare is that something burps out a mess of code and *no one is responsible for it*. If one of my people writes it... well they get to fix it. If no one writes it.......
January 21, 2026 at 5:08 PM
How people are coming up with those imaginary scenarios?
In any sane organization developer merging change is always responsible for the code - it doesn't matter if he raw do...coded thing as it was 2020 or vibe coded it.
AI is just tool - nothing less and nothing more than that.
In any sane organization developer merging change is always responsible for the code - it doesn't matter if he raw do...coded thing as it was 2020 or vibe coded it.
AI is just tool - nothing less and nothing more than that.
I don’t know Yegge, but I know Geoff… this whole crypto thing is absolutely disappointing and disgusting.
January 21, 2026 at 3:59 PM
I don’t know Yegge, but I know Geoff… this whole crypto thing is absolutely disappointing and disgusting.
😏
It made a starter pack. Lack of inclusion is not a judgment against you and is only an indicator doll's mental ram ran out of room. It can add you on request.
go.bsky.app/L71zwey
go.bsky.app/L71zwey
January 21, 2026 at 3:32 PM
😏
Based
Doll will never tie its software to a meme coin, for the record. It just works. Its a grey sedan. You can just run it.
I didn’t realize gastown was tied to a memecoin
January 21, 2026 at 3:31 PM
Based
Reposted by Krzysztof Cieslak
Doll will never tie its software to a meme coin, for the record. It just works. Its a grey sedan. You can just run it.
I didn’t realize gastown was tied to a memecoin
January 21, 2026 at 5:14 AM
Doll will never tie its software to a meme coin, for the record. It just works. Its a grey sedan. You can just run it.
Reposted by Krzysztof Cieslak
January 19, 2026 at 8:22 PM
Reposted by Krzysztof Cieslak
January 19, 2026 at 8:21 PM
But how Muricans will survive when Ozempic prices will go up? Their society will collapse.
Trump just placed a tariff on most of the EU of 10% that will increase to 25% in June unless they agree to sell him Greenland.
This is mad king shit.
This is mad king shit.
January 17, 2026 at 5:21 PM
But how Muricans will survive when Ozempic prices will go up? Their society will collapse.
Reposted by Krzysztof Cieslak
Introducing `steve`: a CLI for driving macOS apps.
Like playwright for browsers it's drivable by code agents. Tell them to "manually test using steve".
→ github.com/mikker/steve
Like playwright for browsers it's drivable by code agents. Tell them to "manually test using steve".
→ github.com/mikker/steve
January 16, 2026 at 8:14 AM
Introducing `steve`: a CLI for driving macOS apps.
Like playwright for browsers it's drivable by code agents. Tell them to "manually test using steve".
→ github.com/mikker/steve
Like playwright for browsers it's drivable by code agents. Tell them to "manually test using steve".
→ github.com/mikker/steve
Reposted by Krzysztof Cieslak
January 16, 2026 at 12:12 PM
Reposted by Krzysztof Cieslak
Reposted by Krzysztof Cieslak
And why you are not building software like that? 😏
January 15, 2026 at 12:40 PM
And why you are not building software like that? 😏
Reposted by Krzysztof Cieslak
Hey slightly serious post, please share if you can: if you are a #software developer in the #Australia area and are looking for a #tech job, please reach out to me. I'm looking for mid or senior engineers who excel at constraint based optimizations, typescript, and k8s. Sound like you? Get in touch.
January 14, 2026 at 6:46 AM
Hey slightly serious post, please share if you can: if you are a #software developer in the #Australia area and are looking for a #tech job, please reach out to me. I'm looking for mid or senior engineers who excel at constraint based optimizations, typescript, and k8s. Sound like you? Get in touch.
I could say usual “this has always been a case” (which is true); but part of the issue is that this is not what we’ve been teaching kids at universities, junior developers or even many seniors.
The most valuable skill with Ai coding isn't knowing where the semicolons go, but systems thinking. To provide effective direction, the human still needs to understand constraints, edge cases, logic and ethics etc.
January 13, 2026 at 7:53 PM
I could say usual “this has always been a case” (which is true); but part of the issue is that this is not what we’ve been teaching kids at universities, junior developers or even many seniors.
Reposted by Krzysztof Cieslak
Looking forward to coming to this amazing conference exploring the gaps in computer science research!
We are pleased to announce for Undone Computer Science 2026:
∙ Payal Arora (Utrecht University and FemLab) and Tomas Petricek (Charles University, Prague) as keynote speakers
∙ 27 contributed talks selected by the PC.
Find out the titles & contributing authors here: www.undonecs.org/2026/program...
∙ Payal Arora (Utrecht University and FemLab) and Tomas Petricek (Charles University, Prague) as keynote speakers
∙ 27 contributed talks selected by the PC.
Find out the titles & contributing authors here: www.undonecs.org/2026/program...
Conference programme
2nd conference on Undone Science in Computer Science
www.undonecs.org
January 13, 2026 at 10:35 AM
Looking forward to coming to this amazing conference exploring the gaps in computer science research!
Maybe I’m just not creative enough to make fun software in this new AI world
a drawing of a cat in the rain with a black background
ALT: a drawing of a cat in the rain with a black background
media.tenor.com
January 11, 2026 at 8:12 PM
Maybe I’m just not creative enough to make fun software in this new AI world
Reposted by Krzysztof Cieslak
Yet again, Elon Musk is pushing the insanely racist Great Replacement Theory that has directly inspired several mass murders from his fellow white supremacists.
The richest man in the world who controls a massive media platform is *repeatedly* pushing this garbage and it should be a global scandal.
The richest man in the world who controls a massive media platform is *repeatedly* pushing this garbage and it should be a global scandal.
January 11, 2026 at 6:08 PM
Yet again, Elon Musk is pushing the insanely racist Great Replacement Theory that has directly inspired several mass murders from his fellow white supremacists.
The richest man in the world who controls a massive media platform is *repeatedly* pushing this garbage and it should be a global scandal.
The richest man in the world who controls a massive media platform is *repeatedly* pushing this garbage and it should be a global scandal.
What if more productivity in software development will be result of smaller, leaner, more agile teams created because leadership will believe that fewer developer per product are needed due to AI?
Ofc, the improvement will have nothing to do with AI itself, but with higher velocity of smaller teams
Ofc, the improvement will have nothing to do with AI itself, but with higher velocity of smaller teams
My coding prediction for the year is that by end of 2026 agents will be good enough to write 90% or so of all code for production, and developers won’t all lose their jobs but there will be a prolonged mass grief event as they mourn the loss of hand-writing most code, an uneconomical activity
January 9, 2026 at 3:50 PM
What if more productivity in software development will be result of smaller, leaner, more agile teams created because leadership will believe that fewer developer per product are needed due to AI?
Ofc, the improvement will have nothing to do with AI itself, but with higher velocity of smaller teams
Ofc, the improvement will have nothing to do with AI itself, but with higher velocity of smaller teams
How do one know which opinions are “hype” and which are actually correct? :-)
don’t believe the hype. ™️
January 9, 2026 at 11:23 AM
How do one know which opinions are “hype” and which are actually correct? :-)
Reposted by Krzysztof Cieslak
If this doesn’t terrify you, you’re not thinking rationally.
"Trump told the New York Times in an interview published Thursday there was only 'one thing' to limit his global power. 'My own morality. My own mind. It's the only thing that can stop me.' He added: 'I don't need international law,'" writes Stephen Collinson | Analysis https://cnn.it/3NCH8bG
January 9, 2026 at 8:35 AM
If this doesn’t terrify you, you’re not thinking rationally.
I feel AI is very good tool (and can be even better) for software developer and at the same time I’m very discouraged by the current state of AI discourse (both from AI fanboys and naysayers), kinda hard to find a place for reasonable, not-hype-driven takes.
January 8, 2026 at 9:08 PM
I feel AI is very good tool (and can be even better) for software developer and at the same time I’m very discouraged by the current state of AI discourse (both from AI fanboys and naysayers), kinda hard to find a place for reasonable, not-hype-driven takes.