Worked on stabilizing integration tests for the opensearch-project/data-prepper repository, focusing on the Router_ThreeRoutesDefaultIT test. Addressed test flakiness by implementing assertion polling within the await loop, ensuring that all assertions are repeatedly checked until they pass, which prevented premature failures. Extended continuous integration timeouts from two to ten seconds to better accommodate slower CI runners, reducing the likelihood of timing-related test failures. This approach improved the reliability and clarity of integration test results. The work was carried out using Java and emphasized integration testing and test reliability, contributing to more consistent and actionable feedback during the development process.