Developed comprehensive end-to-end tests for the course sharing and importing workflow in the hpi-schul-cloud/e2e-system-tests repository, focusing on robust test coverage and reliability. Leveraged JavaScript, Cypress, and Cucumber to implement automated scenarios that included setup and cleanup of test data, as well as detailed assertions for mail, copy link, and QR-code sharing methods. Refactored existing tests for clarity and alignment with project requirements, improving maintainability. Addressed a recurring issue by correcting a selector in the import course modal, which stabilized continuous integration runs and reduced flakiness. These efforts enhanced test reliability and supported more efficient release cycles.