Gabriel Schowe stabilized and hardened CI/CD pipelines for the greenbone/actions and greenbone/workflows repositories by implementing deterministic builds through precise dependency management. He pinned GitHub Actions workflows and dependencies to exact commit hashes using YAML, ensuring reproducible and stable executions across all runs. Gabriel also updated documentation to formalize a version-pin policy, improving both auditability and cross-repository consistency. His work reduced non-deterministic builds, minimized flaky tests, and accelerated issue diagnosis. By leveraging skills in CI/CD, dependency management, and GitHub Actions, Gabriel delivered a robust foundation for reliable deployments, demonstrating depth in process governance and technical implementation within a short timeframe.