I'm Thomas Sebastian Jensen – most people just call me Sebastian.
I’m a Senior Software Engineer & Team Lead focusing on modern .NET development, building apps, tools, samples and libraries for developers around the world.
I love creating open-source packages, writing technical articles, and exploring the latest in AI, .NET, and cross-platform development.
- 💻 Focusing on C#, ASP.NET Core, Blazor, and .NET MAUI
- 🎨 Learning Swift & SwiftUI
- 📦 Publishing NuGet packages and maintaining OSS libraries
- ✍️ Writing blog posts in
- 🇩🇪 German: tsjdev-apps.de
- 🇬🇧 English: medium.com/@tsjdevapps
- 🐦 X/Twitter: @tsjdevapps
- 💼 LinkedIn: in/thomassebastianjensen
▶️ YouTube: youtube.com/@tsjdevapps- 📧 Email: apps@tsjdev-apps.de
- Building a Seven-Segment Display Control with .NET MAUI and SkiaSharp
- From Commit to MSIX: Automating .NET MAUI Windows Builds with GitHub Actions
- From Commit to IPA: Automating .NET MAUI iOS Builds with GitHub Actions
- Before The IPA: Preparing iOS Signing
- From Commit to AAB/APK: Automating .NET MAUI Android Builds with GitHub Actions
- Erstellen eines Seven Segment Display Controls mit .NET MAUI und SkiaSharp
- Image Sortr: Bilder automatisch nach Aufnahmedatum sortieren
- Tiny Tool Town: Kleine Tools, große Freude
- Build 2026 und WWDC26: KI verändert die Softwareentwicklung
- Drei kleine Avalonia-Tools für Bilder im Alltag
If you like what I do, feel free to support me — by using my projects, sharing my work, or buying me a coffee.
