Software

Open source software I’ve created, co-created, or made significant contributions to over the years.

Major Projects

Apache Arrow

Feb 2016 –

A cross-language development platform for in-memory analytics with a standardized columnar memory format. I helped design the core format and work primarily on the C++ and Python implementations.

Positron

Jan 2024 –

A next-generation data science IDE built by Posit, combining the power of VS Code with first-class support for Python and R data science workflows.

Apache Parquet

Jan 2014 –

A columnar storage file format optimized for big data processing. I am a PMC member and principal author of the C++ implementation and Python bindings (PyArrow’s Parquet support).

pandas

Apr 2008

The foundational data analysis and manipulation library for Python. pandas introduced the DataFrame abstraction to Python and became one of the most widely-used tools in data science.