Worked on enhancing the OpenFilePreview SDK within the OfficeDev/microsoft-teams-library-js repository, focusing on expanding file opening capabilities in Microsoft Teams. The development involved adding new parameters to the SDK schema using TypeScript, aiming to reduce latency and improve the overall user experience when previewing files. Collaborated with cross-functional teams to validate integration points and ensure performance met product requirements. The work included updating the schema and maintaining comprehensive changelog documentation to track enhancements. Emphasized SDK development and thorough testing practices throughout the process, demonstrating a methodical approach to extending core functionality in a collaborative, production-scale environment.