Worked on the primefaces/primefaces repository to deliver a registry-based refactor of the DataExporter component, focusing on enhancing cross-JSF compatibility and maintainability. The approach involved removing support for custom exporter instances and standardizing behavior through the DataExporters registry, which streamlined the API and reduced integration complexity. Integration test listeners were added for both Mojarra and MyFaces to ensure reliable initialization of the registry, improving test coverage and reducing regression risk. The work included refactoring legacy code and addressing technical debt in the 15.0.0 context, utilizing Java, JSF, and integration testing to support robust, consistent data export functionality across environments.