Worked on the Entropy-Foundation/aptos-core repository to enhance CI/CD reliability and test data quality by refactoring CI configurations and modernizing build workflows. Leveraged Rust, TOML, and YAML to streamline test data generation, removing outdated configurations and updating Cargo and GitHub Actions processes. Improved the arb_transaction_status data generation logic to filter out incompatible VM status and status code combinations, ensuring that only valid scenarios are tested. Addressed a key issue with the arbitrary implementation for Transaction Status, resulting in more reliable and meaningful test coverage. These efforts reduced test flakiness and accelerated feedback loops, strengthening the project’s CI quality gates.