Anton Livaja modernized CI/CD workflows for the okx/optimism and ethereum-optimism/optimism repositories, focusing on build reliability, efficiency, and security. He migrated the op-deployer Docker build from CircleCI to GitHub Actions, enabling atomic builds and in-container contract compilation while removing outdated configurations. For ethereum-optimism/optimism, Anton introduced per-image change detection in Docker builds, centralizing image references in JSON and improving fork pull request handling. His work leveraged Bash, YAML, and GitHub Actions to streamline deployment processes, reduce unnecessary builds, and enhance maintainability. These targeted improvements delivered measurable value in faster release cycles and safer, more reproducible deployments.