Spencer contributed to the facebook/litho repository by delivering HD badge support for VideoAttachment within the Groot UI, focusing on both feature development and UI polish. He introduced the isHDSend field to the VideoAttachment data model, enabling dynamic HD badge display based on content quality. To enhance visual consistency, Spencer updated the StyleCompat component to support alpha settings, allowing for more nuanced UI styling and improved component visuals. Working primarily with Kotlin and Android development tools, he demonstrated a strong grasp of front end development principles. The work addressed media clarity and styling flexibility, resulting in a more refined user interface experience.