I’ve been extremely lucky to work in realms that allow me to cross institutional and geographic boundaries to collaborate on tools and research software. More generally I write open source tools for scientific computing in Python.
Intake-esm: this package makes it much easier for scientists to load cataloged Earth System Model data on an HPC system or in the cloud.
Pooch: a Python package that manages downloading data files over HTTP and storing them in a local directory.
xarray: a Python package for working with labeled multi-dimensional arrays.
Dask: a Python library for parallel computing.
For a much more up-to-date list of my work, check out my GitHub page.