Koen Zwikstra is a senior freelance software developer based in The Hague with 12 years of hands-on experience building Microsoft client applications using C#, XAML, Xamarin, UWP and JavaScript. He specializes in modernizing and maintaining rich desktop and mobile UIs, with practical expertise in project configuration, build workflows and cross-version compatibility. An active contributor to the open-source Modern UI for WPF project, he has improved shared project support, updated public APIs and modernized templates for VS2015, showing attention to both developer ergonomics and long-term maintainability. Known for pragmatic problem solving, Koen blends deep platform knowledge with an eye for clean APIs and documentation to help teams ship polished client experiences.
Contributions:3 releases, 35 commits, 12 PRs in 1 year 3 months
Contributions summary:Koen contributed to the Modern UI for WPF project by creating a shared project for WPF 4 and 4.5. They renamed a method and updated related documentation, indicating an understanding of the project's internal structure and public APIs. Further contributions included updating copyright notices and upgrading template projects to VS2015. These changes included version updates and adjustments to the build process, demonstrating expertise in managing project configurations and dependencies.
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