During June 2026, contributed to the google/filament repository by implementing cross-platform symbol visibility support for shared and dynamic library builds. This work introduced C++ macro-based visibility controls within the bluegl and bluevk platform backends, addressing linking reliability and enhancing modularity across different operating systems. The approach focused on updating backend integration to ensure default symbol visibility, which streamlines downstream integration and simplifies packaging and distribution. Leveraging expertise in C++ development, cross-platform build systems, and library design, the developer improved the robustness of multi-platform builds. No critical bugs were addressed during this period, with minor issues tracked separately for future resolution.