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Karel Zikmund

@zikicz.bsky.social
427 followers 141 following 57 posts

SW engineer on .NET Networking team at Microsoft. Hiring for .NET/DevDiv/Microsoft/Prague. Opinions are my own. He/him. karelz.github.io

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Reposted by Karel Zikmund
Morten Nielsen @dotmorten.xaml.dev · 08/01/2026
Developing with .NET MAUI? Share your feedback with the .NET MAUI team: www.surveymonkey.com/r/T9KJCTS
surveymonkey.com
Please tell us about your .NET MAUI development experience!
Take this survey powered by surveymonkey.com. Create your own surveys for free.
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Reposted by Karel Zikmund
ACLU @aclu.org · 22/09/2025
Jimmy Kimmel was taken off the air after our government threatened a private company with retaliation, marking a dark moment for free speech in our nation. More than 400 artists across our nation signed on to say: We refuse to be silenced by those in power.
We the people must never accept government threats to our freedom of speech. Efforts by leaders to pressure artists, journalists, and companies with retaliation for their speech strike at the heart of what it means to live in a free country.

Last week, Jimmy Kimmel was taken off the air after the government threatened a private company with retaliation, marking a dark moment for freedom of speech in our nation. In an attempt to silence its critics, our government has resorted to threatening the livelihoods of journalists, talk show hosts, artists, creatives, and entertainers across the board. This runs counter to the values our nation was built upon, and our Constitution guarantees.

We know this moment is bigger than us and our industry. Teachers, government employees, law firms, researchers, universities, students and so many more are also facing direct attacks on their freedom of expression.

Regardless of our political affiliation, or whether we engage in politics or not, we all love our country. We also share the belief that our voices should never be silenced by those in power – because if it happens to one of us, it happens to all of us.

This is the moment to defend free speech across our nation. We encourage all Americans to join us, along with the ACLU, in the fight to defend and preserve our constitutionally protected rights.A graphic listing the names of the more than 400 signers of the ACLU's letter condemning the federal government's retaliation against Jimmy Kimmel. For the full list of signatories, visit aclu.org/kimmel-letter-bk
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Reposted by Karel Zikmund
Tom Deseyn @tomdeseyn.bsky.social · 16/07/2025
I published 'ssh': a .NET tool that mimics OpenSSH 'ssh' (built with Tmds.Ssh!) You can invoke it as 'dotnet ssh' after a tool install ('dotnet tool update -g ssh') or with .NET 10 p6's new 'dnx' command run: 'dnx ssh' @chethusk.bsky.social @jongalloway.bsky.social @zikicz.bsky.social @davidfowl.com
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Reposted by Karel Zikmund
Tom Deseyn @tomdeseyn.bsky.social · 29/04/2025
2nd (and final) C# 13 post covers 'ref struct' improvements, the new 'Lock' type, and [OverloadResolutionPriority] developers.redhat.com/articles/202... cc @jongalloway.bsky.social @zikicz.bsky.social
developers.redhat.com
Some more C# 13 | Red Hat Developer
Learn more about the new advanced features of C# 13 (part 2 of 2)
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Karel Zikmund @zikicz.bsky.social · 29/04/2025
Tech Talks for Universities are back -- watch today 4/29 at 19:15 CEST aka.ms/TechTalks4Unis
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Reposted by Karel Zikmund
Tom Deseyn @tomdeseyn.bsky.social · 16/04/2025
Blog post on C# 13 params collections, partial properties/indexers, index access in object initializers and ref/unsafe in iterators and async methods developers.redhat.com/articles/202... @jongalloway.bsky.social @chethusk.bsky.social @zikicz.bsky.social @antonfrv.bsky.social @jaredpar.bsky.social
developers.redhat.com
C# 13 | Red Hat Developer
Discover the new features of C# 13 (part 1 of 2)
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Reposted by Karel Zikmund
Karel Zikmund @zikicz.bsky.social · 01/03/2025
Using AI in interviews -- looking for volunteers for mock AI-enabled interviews. If you are proficient in using AI in your daily work (job, hobby projects, school work), and you'd like to try to use them also during interview, ping me. This is community-driven effort!
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Karel Zikmund @zikicz.bsky.social · 27/03/2025
Just noticed that replies to my post didn't give me any notification 😮‼️ Am I missing some obvious setting somewhere? (like by default disabled DMs)
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Reposted by Karel Zikmund
Armin Ronacher @mitsuhiko.at · 12/03/2025
This comment by Anders Hejlsberg on the choice of languages for TypeScript is worth reading. Spead that type of thinking! (And recognize the massive shift that Microsoft made)
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Reposted by Karel Zikmund
Amy Siskind @amysiskind.com · 08/03/2025
😂😅
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Karel Zikmund @zikicz.bsky.social · 07/03/2025
What do you do when you catch candidates cheating with AI during interviews? (when it is upfront forbidden) When it is obvious, i.e. they have no clue what they write, why, or start parroting encyclopedic knowledge without saying why.
karelz.github.io
Karel Zikmund - Using AI in Interviews - Experiment / Mock Interviews
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Karel Zikmund @zikicz.bsky.social · 01/03/2025
Using AI in interviews -- looking for volunteers for mock AI-enabled interviews. If you are proficient in using AI in your daily work (job, hobby projects, school work), and you'd like to try to use them also during interview, ping me. This is community-driven effort!
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Reposted by Karel Zikmund
Mark Hamill @markhamillofficial.bsky.social · 28/02/2025
Could not agree more. The Prez & VP are shameful, embarrassing Putin puppets & a disgrace to our country. 🤮 #SlavaUkraine 🇺🇦
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Reposted by Karel Zikmund
Scott Hanselman 🌮 @scott.hanselman.com · 28/02/2025
I stand with Ukraine and the truth that Russia is an invader.
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Reposted by Karel Zikmund
Tom Deseyn @tomdeseyn.bsky.social · 21/02/2025
Check out Tmds.Ssh! It is an MIT licensed .NET SSH client library that supports remote execution, forwarding connections and file management. It works with Linux, Windows, macOS and many Linux-based appliances (router, NAS, ...). github.com/tmds/Tmds.Ssh
github.com
GitHub - tmds/Tmds.Ssh: .NET SSH client library
.NET SSH client library. Contribute to tmds/Tmds.Ssh development by creating an account on GitHub.
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Karel Zikmund @zikicz.bsky.social · 05/02/2025
YARP is changing home and repo name! Please welcome YARP "back" to .NET family, where it always have been in its heart. It should not affect any contributors - GitHub redirects will make everything work. github.com/microsoft/re...
github.com
📢 Repository Move: `microsoft/reverse-proxy` → `dotnet/yarp` · Issue #2736 · microsoft/reverse-proxy
We're moving the YARP repository from microsoft/reverse-proxy to dotnet/yarp! Why the Move? This change aligns YARP with the rest of the .NET ecosystem, making it easier to find and contribute to a...
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Karel Zikmund @zikicz.bsky.social · 03/02/2025
Started thinking about experimenting with AI during interviews. Idea: allow candidates to use it and yet still be able to find out if they might be good hires. Why? ... AI is here, we use it in daily jobs. Why not during interview? I am curious what we will find ...
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Reposted by Karel Zikmund
Kirill Osenkov @kirillosenkov.com · 29/12/2024
Finally had time over the holidays to realize a long-standing dream of mine: a hex editor that knows about the PE file and .NET metadata format. You can click any byte and it will show you which data structure it is in the tree. Every byte is covered. The parser is at github.com/KirillOsenko...
Screenshot of a hex editor with a PE file open, on the left there's a tree with the headers, sections and other parts of the file format. On the right there's a typical table of bytes in hex.
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Karel Zikmund @zikicz.bsky.social · 22/12/2024
Watching a Christmas movie with my 12yo son ... his pick Die hard! My job is done.
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Reposted by Karel Zikmund
Martin Zikmund @mzikmund.dev · 01/12/2024
How did ChatGPT fare at the first two programming puzzles of Advent of Code 2024? Find out in this video ⬇️ #ChatGPT #AdventOfCode #coding #puzzle
youtu.be
ChatGPT vs. Advent of Code 2024 Day 1: Historian Hysteria
Will ChatGPT breeze through the first puzzles of Advent of Code 2024? Let's find out!#openai #chatgpt #python #ai #codeinterpreter #adventofcode Contents:0:0...
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Karel Zikmund @zikicz.bsky.social · 20/11/2024
Call for action: Nudge your friends you want to see here
DM to Ben Adams - Not on BlueSky yet? We are missing you there
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Karel Zikmund @zikicz.bsky.social · 20/11/2024
My move is complete
Snapshot of Twitter profile with I've moved to Bluesky
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Karel Zikmund @zikicz.bsky.social · 20/11/2024
Interview feedback on the spot: I interview quite a lot, let's say 150-200 interviews per year and I love it. One thing I started doing more often this year is to give feedback immediately at the end of the interview (mostly tech screens lately).
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Karel Zikmund @zikicz.bsky.social · 20/11/2024
When you want to energize yourself in the morning with music. What is it? My today's pick was Hardcore/Techno -- Technohead - Number One Contender m.youtube.com/watch?v=Nae-... #ILove90s
m.youtube.com
Technohead - The Number One Contender
YouTube video by Dieter Kattus
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Karel Zikmund @zikicz.bsky.social · 20/11/2024
After years, I woke up with energy to start tweeting ... erm, I mean posting. So ... here we go ...
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Reposted by Karel Zikmund
Rose 🌹 @rose.bsky.team · 19/11/2024
20m with 20 team members 🦋 legends 🤩
20m users on Bluesky as of this morning
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Reposted by Karel Zikmund
Amaury Levé @evangelink.bsky.social · 20/11/2024
The recording of our talk on the new testing platform for .NET conf is now available on YouTube. If you haven't watched it yet, please have a look and give us feedback! youtu.be/9Jz47Ze9LOI?...
youtu.be
Testing.Platform, the new way to run .NET tests
YouTube video by dotnet
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Karel Zikmund @zikicz.bsky.social · 17/11/2024
At Update conference on Thursday I heard @rocky.lhotka.net say that there is ongoing exodus from Twitter to BlueSky of .NET team members for last 2 weeks and I felt seen 😇 ... my timing was independent. I had it on my list for a while. I guess owner involvement in government sealed the deal for me.
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Karel Zikmund @zikicz.bsky.social · 11/11/2024
So, I land on BlueSky (finally the great Twitter ... sorry, X, escape) and people start following me immediately without any post yet. How come?
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