Focused on security hardening, this developer enhanced the CI/CD pipelines for both the meltano/meltano and meltano/sdk repositories by implementing strict version pinning of GitHub Actions to specific commit hashes. Using YAML and leveraging DevOps best practices, they ensured that all workflow dependencies are locked to known-good versions, reducing supply chain risks and improving build reproducibility. Dependabot was configured to automate future updates, maintaining a secure and up-to-date environment. The work standardized security measures across both repositories, increasing pipeline reliability and auditability without introducing customer-facing changes, and demonstrated a methodical approach to CI/CD and infrastructure management.