During February 2025, this developer delivered four user-facing features and a bug fix across ECMWF repositories, focusing on data engineering and performance profiling. They enhanced earthkit-data by implementing a strftimedelta pattern for flexible datetime formatting in Python, complete with validation and tests. In anemoi-docs, they introduced an overview page to clarify the framework’s structure and ecosystem, improving onboarding. Their work in anemoi-datasets streamlined dataset construction by expanding documentation and resolving rotated-pole grid handling. Additionally, they integrated PyTorch-based profiling into anemoi-inference, enabling detailed time and memory analysis. Their contributions emphasized robust documentation, technical writing, and system configuration.