Worked on the mozilla-mobile/firefox-ios repository to enhance the reliability of integration tests surrounding the new menubar promotion. Focused on stabilizing the test suite by ensuring that the promotion is dismissed during setup, which maintained a clean environment for subsequent tests and reduced flakiness in continuous integration. Addressed a targeted bug by updating experiment integration tests, allowing for faster CI feedback and safer experimentation with new features. Utilized XCUITest and iOS development skills, primarily working in Swift, to implement these changes. The work emphasized robust test automation practices and contributed to a more stable and maintainable testing infrastructure for the project.