Guilhem Charles enhanced the CI/CD pipeline for the DataDog/datadog-static-analyzer repository, focusing on improving reliability, isolation, and efficiency. He consolidated pipeline configurations using YAML and GitLab CI, removing deprecated settings and migrating from an external ECR to an internal registry to standardize build environments. By introducing explicit CPU resource allocation, Guilhem reduced variability in build times and established deterministic CI performance. His work addressed CI flakiness and accelerated feedback loops, laying a scalable foundation for future development. The changes improved security and maintainability, reflecting a thoughtful approach to DevOps practices and infrastructure as code within a short timeframe.