Worked on system-level enhancements for Fuchsia, focusing on migration readiness and API modernization across AvaloniaUI/angle and dart-lang/sdk repositories. Developed a C++ helper to simplify Fuchsia IO2 service connections, removing manual handle management and standardizing access to the /svc directory, which reduced boilerplate and improved reliability during platform migration. Later, modernized the Fuchsia runtime API in dart-lang/sdk by integrating new fdio functions, aligning runtime behavior with Fuchsia API level 28 and enabling use of modern system calls for executables and dynamic libraries. These efforts improved maintainability, reduced technical debt, and positioned the codebase for future Fuchsia platform updates.