Zack Zehring focused on improving CI/CD reliability and workflow governance across the grafana/tempo and grafana/shared-workflows repositories. He addressed critical CI failures by updating GitHub Actions YAML configurations, specifically restoring execution of the drone signature check through permission adjustments. Zack also enhanced the shared-workflows repository by implementing fork-aware gating, which reduced CI noise for external contributors and improved onboarding. In addition, he authored comprehensive Markdown documentation for reusable workflows, clarifying usage and reducing misconfiguration risks. His work demonstrated depth in CI/CD pipeline maintenance, GitHub Actions workflow design, and documentation, resulting in more stable and accessible automation for the engineering team.