Worked on the GetStream/stream-chat-go repository to implement server-side file upload size control by introducing a SizeLimit parameter within the FileUploadConfig. This feature enables administrators to centrally manage and enforce file upload restrictions, supporting improved security and compliance. The development process involved backend configuration modeling in Go, along with comprehensive unit and integration testing to ensure reliable enforcement of size limits during both update and retrieval of application settings. The work emphasized traceability through dedicated commits and maintained CI readiness. Focus remained on enhancing code quality and documentation, with no major bugs addressed during this period as efforts centered on reliability.