Worked on the david-vanderson/dvui repository to enhance cross-platform OpenGL rendering and stabilize the user interface on macOS. Refactored OpenGL API usage in Zig to align with modern graphics standards, improving both compatibility and performance across platforms. Addressed a macOS-specific issue by normalizing content scale, ensuring consistent UI visuals regardless of backend. Consolidated rendering paths to reduce platform-specific code, which improved maintainability and set the stage for smoother future enhancements. The work demonstrated a strong grasp of graphics programming and backend development, focusing on practical solutions that improved rendering reliability and UI consistency within a short development period.