Worked on enhancing CI reliability and security-testing workflows in the 0xPolygonHermez/cdk-erigon repository, focusing on resolving network access issues for automated tests. Addressed a bug by configuring Docker containers to run with the --network host option, enabling security tests to access the Kurtosis-provided RPC URL within the CI environment. This adjustment reduced test flakiness and ensured end-to-end execution of security validations. Demonstrated practical skills in CI/CD pipeline management, Docker networking, and YAML configuration. The work contributed to more robust and reliable security testing processes, supporting the repository’s ongoing efforts to maintain secure and stable code deployments.