Developed and delivered the Zizmor CI/CD Security Linter for the oxsecurity/megalinter repository, focusing on enhancing security for GitHub Actions workflows. The work involved implementing the linter using Python and YAML, with Dockerfile support for integration, and included comprehensive tests and initial configuration to support a phased rollout. The approach emphasized validation and process improvement by expanding the test harness to cover hidden files and the .github directory, ensuring robust coverage. Documentation and spell-check updates were made to clarify usage and terminology. The initial configuration disabled non-critical audit findings, allowing for safe adoption and planned future hardening of results.