Kirill Osenkov

@KirillOsenkov
1.3K Followers
321 Following
2.6K Posts
(Unofficial) VP of Developer Productivity at Microsoft. Developer tools, engineering systems. .NET, C#, Roslyn, Visual Studio, Editor, WPF, Avalonia, MSBuild.
GitHubhttps://github.com/KirillOsenkov
Twitterhttps://twitter.com/KirillOsenkov
BlueSkyhttps://bsky.app/profile/kirillosenkov.com

Just blogged: My NuGet packages hit a quarter-billion downloads. Just a number; I’m not sure it means much, but I turned it into a short note on NuGet, OSS, and the community.

https://www.devlead.se/posts/2026/2026-03-22-quarter-billion-nuget-downloads

#nuget #dotnet #oss

@devlead - Mattias Karlsson's Blog - A quarter of a billion NuGet downloads

A personal milestone and a short reflection on NuGet's history and what it has enabled for open source and the community

Today is Fork's birthday 🎂. It's been 10 years since the first commit. Time flies, but when we look back at our journey, it turns out it hasn't been a short one. Thank you for being with us, for your feature requests and bug reports! ❤️ Looking forward to the next 10 years!🤘
> > Writing a .NET Garbage Collector in C# - Part 9: Frozen segments and new allocation strategy http://dlvr.it/TRXsND

hey everyone,

you may have guessed reading between the lines, but I lost my job in the recent tech layoffs…

also burnt out and realised I need to go back to working on stuff I care about.

I hope to gather enough small monthly sponsors to at least cover the bills, so I can:

- 🖥️ create beautiful apps for #Linux / #GNOME

- ✏️ provide free #design support to #OpenSource projects

if you like my work, please consider $1/month to make this possible?

thank you. :)

https://github.com/sponsors/hbons

Sponsor @hbons on GitHub Sponsors

Hello! I'm Hylke. I'm a product designer who codes. I design and build software. Both how it looks, and how it works.

 I love working with people from all over the world.

GitHub

I wrote something on LinkedIn: https://www.linkedin.com/posts/psvensson82_dotnet-csharp-opensource-activity-7437280429956718592-qE03?utm_source=share&utm_medium=member_ios&rcm=ACoAAABoHd0BUQohl2o0cpcvLPtt4udnRotmCbw

I'm looking for a new gig and/or employment (if interesting enough). Please repost if you can! Much appreciated!

#dotnet #csharp #opensource #staffengineer #softwareengineering #consulting | 👨‍💻 Patrik Svensson

🚀 I’m wrapping up my current engagement soon and starting to look for my next technical challenge. I’ll be available again starting April 10. A bit about me: • 20+ years of experience building and delivering complex solutions in .NET • Microsoft MVP – Developer Technologies (8 years in a row) • GitHub Star Award (3 years in a row) for my open source contributions I’m also the creator of the open source projects Cake and Spectre.Console. Together they have over 400 million downloads and are used by companies, organizations, and government agencies around the world, including Microsoft, Amazon, IBM, NASA, and GitHub. If you’re working with .NET platforms, developer tooling, or internal developer platforms, I’d love to connect. In my work I place a strong emphasis on quality, sustainable architectures, and understanding the bigger picture across systems and organizations. I thrive in roles where I can contribute through technical leadership, architecture, and improving the developer experience. 📍 Availability • Start: April 10 • Capacity: 50–100% • Remote or hybrid in Stockholm I’m primarily looking for consulting engagements, ideally in a Staff Engineer role, but I’m also open to full-time opportunities if the right technical challenge comes along. 👉 Feel free to reach out or pass this along to someone in your network. #dotnet #csharp #opensource #staffengineer #softwareengineering #consulting

LinkedIn
making a GUI IDE in 2026 is an increasingly meditative act

@csk Wonderful!

I made your code even messier by introducing a small... let's say "typographic" improvement:

https://editor.p5js.org/lenaschimmel/full/l74GivEMb

p5.js Web Editor

A web editor for p5.js, a JavaScript library with the goal of making coding accessible to artists, designers, educators, and beginners.

Just released a major 3.0 version of SharpYaml https://xoofx.github.io/SharpYaml/ 🎉

Back from maintenance mode, this new version brings significant improvements: Compatibility with System.Text.Json attributes, NativeAOT support built-in, more built-in serializable types supported, faster than ever and full documentation website! 🚀

I had a need for NativeAOT support for a new project, here it is!

#dotnet

SharpYaml

SharpYaml High-performance YAML for .NET: parser, emitter, and a System.Text.Json-style object serializer. Get started Serialization Low-level APIs GitHub dotnet add package SharpYaml Available on NuGet — net8.0, net10.0, netstandard2.0 Familiar API SharpYaml is intentionally shaped like System.Text.Json: YamlSerializer, YamlSerializerOptions, source-generated contexts, and a converter pipeline. Two layers Use the syntax/model layer for lossless parsing, spans, and tooling. Use YamlSerializer...

Girls’ Day at the JetBrains office in Munich, Apr 23rd. The registration is open here: https://www.girls-day.de/.oO/Show/jetbrains-gmbh/ein-tag-in-der-welt-der-softwareentwicklung
Angebot: Ein Tag in der Welt der Softwareentwicklung

München | 23. April 2026, 10:00 | JetBrains GmbH, München mit Ekaterina Popova

Girls'Day

Over the past couple years, I have come to know the #dotnet platform pretty well, from a developer's and a #reversing standpoint.

I can’t always say the same the #infosec community.

Today, I decided to rant a little (or maybe a lot 🙃)

👉 https://blog.washi.dev/posts/misconceptions-about-dotnet/