Worked on the firebase/firebase-ios-sdk repository to enhance observability by implementing structured logging within the SettingsCacheClient component. The approach involved replacing raw print statements with a standardized logging mechanism, ensuring alignment with Firebase SDK logging standards and improving both debuggability and traceability across different environments. This refactoring was carried out in Swift, focusing on code hygiene and maintainability without altering the public API. The work demonstrated skills in logging, refactoring, and software development, and laid the foundation for future telemetry and analytics integration. No major bugs were addressed during this period, as the emphasis remained on feature delivery and code quality.