Rjv Sonata contributed to the openedx/course-discovery and openedx/frontend-app-publisher repositories by building features that improved data accuracy, notification systems, and credit-bearing course management. They enhanced the Studio API to handle external course run dates and normalized enrollment data, ensuring reliable CSV exports and reducing data inconsistencies. Rjv expanded the course deadline reminder system to support new intervals and instructor-paced courses, using Django management commands and Python for robust backend logic. On the frontend, they added conditional credit metadata fields to the Publisher UI with React and Redux Form, and upgraded Docker images to maintain security and supportability across deployments.