Worked on the aiven/aiven-client repository to streamline backend operations by removing all Cassandra support from the API. This involved decommissioning related API endpoints, commands, and validation logic, reflecting a strategic shift in product direction. Using Python and leveraging API development and backend development skills, the changes were implemented in a single, well-documented commit. The update reduced the maintenance surface area and improved API stability for supported databases, aligning the codebase with current product priorities. The work focused on long-term maintainability, ensuring that the API remains robust and easier to manage as the technology stack evolves away from Cassandra.