Douglas Duteil focused on stabilizing and securing CI/CD workflows and core infrastructure for the proconnect-gouv/federation and numerique-gouv/proconnect-identite repositories. He addressed CI workflow permission issues and hardened Bash scripts to prevent unintended directory changes, using Bash, YAML, and GitHub Actions to improve reliability and security. In response to upstream package instability, Douglas executed a controlled rollback of Node.js and npm versions, restoring service stability and maintaining business continuity. His work emphasized disciplined change management, compliance with code scanning policies, and robust automation, resulting in more predictable releases and easier maintenance without introducing new features during the two-month period.