Julien Van Roy focused on enhancing the test infrastructure for the debezium/debezium repository by upgrading the integration test suite to AssertJ-DB 3.0.0 and migrating JDBC sink test assertions to the AssertDbConnection API. Working primarily in Java, Julien applied database testing and integration testing skills to align the test suite with the latest APIs, improving both coverage and maintainability. The work centered on infrastructure improvements rather than feature expansion, addressing test stability and future-proofing the codebase. Julien’s contributions demonstrated a methodical approach to technical debt, ensuring the repository’s readiness for upcoming releases through targeted, API-driven testing enhancements.