Charlie Hebert-Pinard delivered four user-facing features and a bug fix across four ECMWF repositories, focusing on data engineering and performance profiling using Python and PyTorch. In earthkit-data, Charlie implemented a strftimedelta pattern for flexible datetime formatting, complete with validation and tests. For anemoi-docs, he authored a comprehensive overview page to clarify framework structure and onboarding. Enhancements to anemoi-datasets documentation improved dataset construction workflows, while a targeted fix ensured correct handling of rotated-pole grids. In anemoi-inference, Charlie integrated time and memory profiling with PyTorch, enabling detailed performance analysis. The work demonstrated depth in technical writing and system configuration.