Mattias Karlsson (he/him)✓ Add us as a preferred source on Google
🔄 Data last refreshed 2 months ago
🤝
Make a deal with Mattias Karlsson (he/him)
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
619
Account age
4 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor Mattias Karlsson (he/him)
Known for
9 views
10 years. 10 MVP awards🏆 . Honored, humbled, and proud to be recognized once again as a Microsoft MVP in Developer Technologies (.NET). #MVPBuzz #dotnet
6 views
We added another badge to the matrix 🔨 , one C# build definition running multiple operating and build systems🤩
Latest addition RWX 🚀
https://dotnet.social/@cakebuild/116620361687784166
#csharp #dotnet #devops
5 views
Nice📢dotnet-outdated tool now supports .NET file-based apps for both package and sdk references 👍
https://www.nuget.org/packages/dotnet-outdated-tool/
#dotnet #csharp
4 views
This is what happens when you've got more than fifty .NET open-source projects and they release new .NET SDKs 🤣 #dotnet #PatchTuesday
📊 Post engagement
Recent posts · likes + reposts
May 23latest
4
Avg engagement / post
3–6
Typical post (engagement)
0.6%
Engagement vs followers
74/100
Very consistent reach
Apr 2022
On Mastodon since
Half of recent posts land between 3 and 6 likes + reposts (median 5) — a dependable floor a sponsored post can count on.
🔥 Top post: 10 years. 10 MVP awards🏆 . Honored, humbled, and proud to be re · 9 likes + reposts
📊 Activity & format
Posting cadence
1.5 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 8 text · 3 image · 1 video.
Follower / following
1.7×
Follows 361 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
🔥 Top post
10 years. 10 MVP awards🏆 . Honored, humbled, and proud to be recognized once again as a Microsoft MVP in Developer Technologies (.NET). #MVPBuzz #dotnet
This is what happens when you've got more than fifty .NET open-source projects and they release new .NET SDKs 🤣 #dotnet #PatchTuesday
Some Facebook marketplace conversations makes be just want to make a video of burning the item and sending it to the "potential" "buyer"... 🤣
I'm a great private preview beta tester, nothing's "default" US developer on my machine, Swede, with English OS language, but Swedish dates, currency, and keyboard (and en-US) settings in a positive UTC timezone.
I break things just by be…
Just blogged: Follow-up to my 2021 console stack post: templates scaffold well, but shared glue code drifts when you maintain many CLI tools.
Now I use Devlead.Console.Template plus the Devlead.Console source package. Scaffold once, update…
Ever written a blog post, and mid-through realized that things don't work as you thought, but instead of changing the blog post draft, you refactor the code to work as you thought, because that makes more sense🤔😎
I really wish #NuGet had an SBOM tab, i.e., #dotnet tools show "This package has no dependencies." which, from a NuGet package point of view, is true, but .NET tools can have plenty of dependencies, they're just bundled. Dependencies aren'…
▶
Nice📢dotnet-outdated tool now supports .NET file-based apps for both package and sdk references 👍
https://www.nuget.org/packages/dotnet-outdated-tool/
#dotnet #csharp
Just renewed Six Labors ImageSharp license, @james_jackson_south done a stellar job maintaining it, worth every penny. #dotnet #OSS
Looks like someone is doing some spring cleaning of github repos 🤔🤷
I wonder what motivation people have to send PRs to projects they don't use, with code they don't understand, needing significant guidance addressing feedback on the code themselves submitted. 👀🤷
We added another badge to the matrix 🔨 , one C# build definition running multiple operating and build systems🤩
Latest addition RWX 🚀
https://dotnet.social/@cakebuild/116620361687784166
#csharp #dotnet #devops
🐘 Community & instance
Home server
mastodon.social
A large general-interest Mastodon server. On the fediverse the server a creator picks hints at their community — this one spans all topics.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Apr 2022
An established account with real history on the platform.
💡 Facts
🗓️Joined Mastodon in 2022 — 4 years ago.
👁️Averages 4 views per post.
📤Posts about 1.5× per week.
🕵️ Fake follower check
Estimated52/100
Fair
Credibility score
76%
Mixed
Real audience
Medium
Fake-follower risk
High
Data confidence
- Est. 76% real, active audience · Medium fake-follower risk.
- Low engagement (~0.6% of followers engage each post) — a sign of an inflated or inactive audience.
- Verified account.
- Established account (4+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Partner & Technical fellow at WCOM AB
.NET Microsoft MVP.
.NET Foundation project / OSS maintainer.
Have been coding since the ’80s (C128 & Amiga).
Father of 2, and husband of 1.
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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17%
Jevon Carey
14%
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12%
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10%
Tog Hackerspace
10%
Joachim Bondo
10%
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Frequently asked questions
How much does Mattias Karlsson (he/him) charge for a sponsorship?
Mattias Karlsson (he/him) hasn't published fixed prices yet. Send a proposal through SocialDB and agree terms directly — your payment is held in escrow until the work is approved.
How do I contact Mattias Karlsson (he/him) for a brand deal or collaboration?
Send a paid deal or collab request right here on SocialDB — we notify Mattias Karlsson (he/him), and once they accept, your payment is held safely in escrow and released when the work is approved. You don't need to track down an email.
How many followers does Mattias Karlsson (he/him) have?
Mattias Karlsson (he/him) has 619 followers on Mastodon.
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