During April 2025, Ermilov enhanced CI infrastructure for the bazelbuild/continuous-integration and grpc/bazel-central-registry repositories by focusing on security and reliability. He mitigated command injection risks in the bcr-pr-reviewer GitHub Action by replacing execSync with spawnSync, ensuring safer handling of diff arguments and strengthening PR validation. Ermilov also upgraded the BCR PR Reviewer Action to its latest stable release across CI workflows, improving consistency and enabling recent bug fixes. His work demonstrated practical application of Node.js process management, CI/CD automation, and security best practices using JavaScript and YAML, resulting in more robust and maintainable continuous integration pipelines.