Administer, scale, and evolve CI/CD platforms, source control systems (e.g., GitHub, GitLab, Bitbucket, Jenkins, Bamboo, or modern equivalents), and the supporting on-premise Kubernetes clusters or VM-based infrastructure they run on. Experience administering and scaling code hosting/collaboration platforms (GitHub, GitLab, Bitbucket) and CI/CD systems (Jenkins, GitHub Actions, GitLab CI, Bamboo, or similar) on on-premise infrastructure.