Alex Zhu focused on stabilizing end-to-end tests across the stripe-react-native and stripe-android repositories during a complex institution name renaming process. By leveraging Kotlin and YAML for test automation and CI/CD workflows, Alex temporarily disabled tests referencing outdated institution names and updated fixtures and test strings to align with the new naming conventions. This approach minimized false negatives and maintained CI reliability, allowing ongoing development to proceed without interruption. Alex also established a branch-based strategy for re-enabling tests post-rename, ensuring a smooth transition and clear traceability. The work demonstrated careful coordination and attention to cross-repository consistency and test reliability.