Panagiotis Evaggelou developed and enhanced backend features for the canonical/snapcraft and canonical/mir repositories over a two-month period, focusing on robust system behavior and maintainable code. He implemented optional summary fields in the ConfDB schema, updating data models and YAML generation logic in C++ and Python to support richer configuration descriptions, and ensured reliability through comprehensive unit testing. On canonical/mir, he improved window management by stabilizing Z-order behavior on minimize and refactored the InputDeviceObserver architecture, introducing a no-op observer for cleaner initialization and clearer test boundaries. His work emphasized data modeling, object-oriented programming, and systematic refactoring for production stability.