Worked across the hmemcpy/nixpkgs and bitnami/charts repositories to enhance build system reliability and Kubernetes deployment stability. Refactored the NixOS Graphite module to use lib.getExe for consistent executable path handling and resolved Django admin script issues, improving migration and static asset workflows. Addressed Python packaging challenges by adding missing dependencies and updating test suites for Python 3.13 and Slixmpp API changes. In bitnami/charts, enabled secure Redis Sentinel ACL configuration via user-defined secrets and fixed configuration formatting. Additionally, improved Argo CD ApplicationSet reliability by removing duplicate matchLabels in ServiceMonitor YAML, demonstrating proficiency in Nix, YAML, and Kubernetes.