Worked on the apache/celeborn repository to upgrade the build environment by moving Maven to version 3.9.9, focusing on improving build reliability and compatibility with newer dependencies. The upgrade was implemented with careful attention to preserving existing behavior, ensuring that no user-facing changes were introduced and minimizing risk for future development. The work involved managing Java-based build processes and dependency management, with clear and well-documented commit messages to support traceability and auditability. This contribution demonstrated a methodical approach to infrastructure maintenance, emphasizing stability and maintainability within the project’s build pipeline, and leveraging skills in Maven, Java, and build automation.