Karel Zikmund
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zikicz.bsky.social
Karel Zikmund
@zikicz.bsky.social
SW engineer on .NET Networking team at Microsoft. Hiring for .NET/DevDiv/Microsoft/Prague.
Opinions are my own. He/him.

https://karelz.github.io
Pinned
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!
Reposted by Karel Zikmund
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.
September 22, 2025 at 3:02 PM
Reposted by Karel Zikmund
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
July 16, 2025 at 5:54 AM
Reposted by Karel Zikmund
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
Some more C# 13 | Red Hat Developer
Learn more about the new advanced features of C# 13 (part 2 of 2)
developers.redhat.com
April 29, 2025 at 12:33 PM
Tech Talks for Universities are back -- watch today 4/29 at 19:15 CEST

aka.ms/TechTalks4Unis
April 29, 2025 at 1:56 PM
Reposted by Karel Zikmund
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
C# 13 | Red Hat Developer
Discover the new features of C# 13 (part 1 of 2)
developers.redhat.com
April 16, 2025 at 6:52 PM
Reposted by Karel Zikmund
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!
March 1, 2025 at 11:36 AM
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)
March 27, 2025 at 8:55 AM
Reposted by Karel Zikmund
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)
March 12, 2025 at 9:40 AM
Reposted by Karel Zikmund
😂😅
March 8, 2025 at 2:38 AM
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.
Karel Zikmund - Using AI in Interviews - Experiment / Mock Interviews
karelz.github.io
March 7, 2025 at 4:15 PM
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!
March 1, 2025 at 11:36 AM
Reposted by Karel Zikmund
Could not agree more. The Prez & VP are shameful, embarrassing Putin puppets & a disgrace to our country. 🤮

#SlavaUkraine 🇺🇦
February 28, 2025 at 9:40 PM
Reposted by Karel Zikmund
I stand with Ukraine and the truth that Russia is an invader.
I stand with Ukraine and the truth that Russia is an invader.
February 28, 2025 at 10:33 PM
Reposted by Karel Zikmund
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 - tmds/Tmds.Ssh: .NET SSH client library
.NET SSH client library. Contribute to tmds/Tmds.Ssh development by creating an account on GitHub.
github.com
February 21, 2025 at 5:24 AM
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...
📢 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...
github.com
February 5, 2025 at 10:42 PM
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 ...
February 3, 2025 at 9:51 AM
Reposted by Karel Zikmund
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...
December 29, 2024 at 8:08 PM
Watching a Christmas movie with my 12yo son ... his pick

Die hard!

My job is done.
December 22, 2024 at 9:21 PM
Reposted by Karel Zikmund
How did ChatGPT fare at the first two programming puzzles of Advent of Code 2024? Find out in this video ⬇️

#ChatGPT #AdventOfCode #coding #puzzle
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...
youtu.be
December 1, 2024 at 6:14 AM
Call for action:
Nudge your friends you want to see here
November 20, 2024 at 12:44 PM
My move is complete
November 20, 2024 at 12:42 PM
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).
November 20, 2024 at 12:17 PM
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
Technohead - The Number One Contender
YouTube video by Dieter Kattus
m.youtube.com
November 20, 2024 at 9:25 AM
After years, I woke up with energy to start tweeting ... erm, I mean posting.
So ... here we go ...
November 20, 2024 at 9:21 AM
Reposted by Karel Zikmund
20m with 20 team members 🦋 legends 🤩
November 19, 2024 at 4:05 PM