Worked on the raccoongang/edx-platform and openedx/edx-platform repositories, focusing on backend stability and feature development using Django, Python, and Django REST Framework. Delivered a new auditing feature to track course access role changes, implementing a dedicated model, migrations, Django admin integration, and signals to log create, update, and delete events, which improved governance and rollback capabilities. Addressed a critical bug in the course detail page by refactoring the InstructorInfoSerializer, resolving rendering errors. Additionally, fixed image URL handling in copy-paste workflows, ensuring images display correctly during file imports. Emphasized robust API development, database management, and precise bug fixing.