Greg McCullough focused on platform modernization and build reliability across RedHatInsights/chrome-service-backend and RedHatInsights/quickstarts. He upgraded the Go toolchain and dependencies, updated builder images to UBI 9, and streamlined dependency management using Go Modules and YAML. In chrome-service-backend, Greg improved maintainability and security by removing redundant directives and aligning dependencies with current standards. For quickstarts, he resolved OpenAPI generation errors and fixed ambiguous SQL column names, enhancing build consistency and database interaction. His work emphasized stability, compatibility, and maintainability, leveraging skills in build engineering, CI/CD, and containerization to deliver robust backend improvements without introducing customer-facing features.