Timothy Miller is a seasoned software engineer with 12 years of experience, currently focused on developer tooling and open-source UI frameworks. He spent five years at Microsoft advancing .NET MAUI and XAML Hot Reload, shipping features like Visual Diagnostics, live preview overlays, and secure TCP/IP Hot Reload connections that improved cross-IDE workflows by bringing Visual Studio capabilities to VS Code. Now contributing to Avalonia UI from Tokyo, he continues to build dev tools and platform features that simplify UI development and debugging. His background spans full-stack and DevOps work—from refactoring legacy SaaS platforms to automating multi-region deployments for GitHub Codespaces—giving him a pragmatic systems-level view. An active contributor to high-profile repos like dotnet/maui and monodevelop, he’s known for improving visual trees, screenshot APIs, and tooling integrations that directly boost developer productivity. He pairs a practical engineering mentality with a strong commitment to accessible, real-time developer experiences.
12 years of coding experience
9 years of employment as a software developer
Bachelor of Applied Science - BASc, Computer Science, Bachelor of Applied Science - BASc, Computer Science at University at Albany
.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
Role in this project:
Full-stack Developer
Contributions:101 reviews, 27 commits, 71 PRs in 1 year
Contributions summary:Timothy primarily focused on enhancing the .NET MAUI framework, particularly related to UI and visual diagnostics. Their work involved refactoring and correcting the visual tree, addressing issues with parent/child relationships, and implementing visual tree helper functions. They also contributed to improving the screenshot API and implemented IVisualTreeElement for TableView and TableView related features. Several commits focused on the visual diagnostics and Hot Reload functionality, which is critical for developers working with .NET MAUI.
Contributions:20 commits, 2 PRs, 17 pushes in 1 year 8 months
Contributions summary:Timothy contributed to the MonoDevelop project, a .NET IDE. Their work focused on implementing and refactoring the update level/channel features of the IDE. This involved adding support for dynamic channels, removing/re-adding update levels, adjusting the option panels, and updating the service to reflect the changes. The user also made changes to the core runtime to accommodate the new features.
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