Worked on the home-assistant/core repository to enhance the Ephember integration by enabling multi-home and multi-zone management, addressing the need for scalable deployments across different households. Leveraged Python and backend development skills to migrate the Ephember component to the updated pyephember2 library, improving compatibility and ensuring future maintainability. Introduced a unique identifier for EphEmber thermostats, which improved device identification and reliability in environments with multiple homes. Focused on robust API integration to streamline hot water device handling and reduce identification errors. The work laid a foundation for easier maintenance and future enhancements, emphasizing reliability and scalability in smart home systems.