Bruno Rafael focused on security hardening of the CI/CD workflow for the evervault/evervault-js repository during February 2026. He addressed credential management by removing the default GITHUB_TOKEN from push operations and introducing an explicit token for the changesets action, thereby reducing token exposure and improving authentication reliability. Working primarily with YAML and leveraging GitHub Actions within a DevOps context, Bruno stabilized automated versioning and tagging processes. His targeted changes resolved credentials-related workflow issues, enhancing both the security posture and release reliability of the repository. The work demonstrated a focused approach to CI/CD pipeline improvements within a short, one-month period.