Christian Tonye contributed to the MTES-MCT/rapportnav2 repository by delivering targeted improvements in CI/CD pipeline efficiency and security management. He optimized the GitLab CI workflow by bypassing the dependency check stage, streamlining builds and enabling faster feedback for feature development. Using YAML for pipeline configuration, Christian also enhanced vulnerability management by updating the dpc_ignore-cve.xml file, allowing the team to focus on actionable security issues and reduce triage noise. His work demonstrated practical application of CI/CD and security management skills, with a focus on maintainability and workflow efficiency, though the scope was limited to configuration and process enhancements over two months.