Worked on the substrait-io/substrait-java repository to deliver reliability-focused enhancements, including the addition of PostgreSQL TPC-H integration tests that verify the correctness of SQL translations within the Substrait framework. Improved CI/CD workflows by implementing concurrency management for pull request title checks, ensuring that only the latest changes are validated and reducing unnecessary resource consumption. Applied security best practices by restricting third-party tooling permissions to mitigate supply-chain risks. Leveraged Java, SQL, and GitHub Actions to strengthen test automation, optimize continuous integration processes, and enhance the overall security posture, resulting in more reliable and efficient development and deployment pipelines.