Steven Thewissen
.NET Developer at Fizo Labs
Hulsberg, Limburg, Netherlands
Summary
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Rockstar🎓
Top SchoolSteven Thewissen is a seasoned .NET developer with 11 years of experience specializing in mobile and full-stack solutions, particularly using Xamarin/.NET MAUI and Azure-based Web APIs. He has led mobile teams as Lead Xamarin Developer and contributed significant functionality and UX improvements to the widely used Xamarin Community Toolkit, including converters and iOS-safe area effects. Based in Hulsberg, Netherlands, he combines practical enterprise experience from long-term roles at KEMBIT and project work for clients like DHL and Medtronic with entrepreneurial chops from co-founding a game studio. Known for pragmatic refactors and hands-on UI work, he brings a coder-first approach to architecting cross-platform mobile apps and developer tooling.
10 years of coding experience
14 years of employment as a software developer
Stella Maris College, MeerssenCPP Certified Software Architect, CPP Certified Software Architect at Open UniversiteitBachelor of ICT, Bachelor of ICT at Hogeschool Zuyd (Maastricht, Heerlen, Sittard)
Dutch, English, German
Stackoverflow
2,971reputation
201kreached
93answers
11questions
xamarin
top-5%
xaml
top-5%
Github Skills (18)
converter10
xamarin-forms10
dotnet-core10
csharp10
xaml9
xamarin9
behavior9
android8
uwp8
ios8
listview6
right-to-left6
portable-class-library6
internationalization6
xamarin-ios6
Programming languages (11)
Github contributions (5)
xamarin/XamarinCommunityToolkit
May 2020 - Jun 2021
The Xamarin Community Toolkit is a collection of Animations, Behaviors, Converters, and Effects for mobile development with Xamarin.Forms. It simplifies and demonstrates common developer tasks building iOS, Android, and UWP apps with Xamarin.Forms.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:50 reviews, 12 commits, 25 PRs in 1 year 1 month
Contributions summary:Steven contributed significantly to the Xamarin Community Toolkit by implementing and refactoring various converters, including boolean, list, and multi-value converters. They added new features like the `MultiConverter` and the `SafeAreaEffect` for iOS-specific styling. Furthermore, the user made UI updates to the sample application, restructuring the samples and adding a new `StateLayout`. Their work focused on enhancing the toolkit's functionality and improving the user experience within the Xamarin.Forms framework.
behaviorsxamarin-community-toolkituwpmaccatalystmobile-development
sthewissen/Xamarin.Forms.StateSquid
Aug 2019 - Oct 2020
Spiritual successor to EasyLoading, turn any layout element into an individual state-aware element.
Contributions:53 commits, 13 PRs, 29 pushes in 1 year 3 months
user-interfacereactindividualweb-componentslayout
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