Worked on security and maintainability improvements for CI/CD workflows in the centreon/centreon-collect and centreon/centreon repositories. Focused on modernizing GitHub Actions by upgrading to SHA-pinned actions and removing legacy security analysis tooling, specifically Checkmarx, to reduce tooling debt and streamline maintenance. Addressed linting issues to improve code quality and set the stage for future security tooling integration. Employed YAML for workflow configuration and leveraged DevOps practices to enhance deployment security. The updates consolidated tooling strategies across repositories, resulting in a more robust and maintainable CI/CD pipeline while preparing both projects for upcoming security enhancements and easier long-term maintenance.