Lisandro Cortés developed a listener-based event handling framework for the SpacetimeDB family, focusing on both the clockworklabs/SpacetimeDB and clockworklabs/com.clockworklabs.spacetimedbsdk repositories. He refactored the C# SDK to integrate AbstractEventHandler, enabling insert, update, and delete events in the Table class to be managed through custom listeners rather than direct subscriptions. This approach improved decoupling and maintainability, establishing a consistent API surface across core and SDK components. Leveraging C#, API design, and event-driven architecture, Lisandro’s work laid a scalable foundation for future event-driven features and enhanced the developer experience by streamlining listener management and invocation paths.