3+ years in Windows desktop application development using Windows App SDK, WinUI (or similar), C#, XAML. Ideally additional experience with native Windows code (C++, Win32/WinRT/COM). Deep understanding of Windows application architecture, including interop between managed code (.NET) and native code. Proven track record of designing, building, and shipping production-quality desktop applications. Strong experience with accessibility APIs on Windows (e.g. Microsoft UI Automation or similar). Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multi-threading or asynchronous programming. Experience leading technical design, mentoring other engineers, conducting code reviews, and making architecture-level decisions. Strong communication skills.