Wes McKinney is a software engineer at Two Sigma investments. He is the original developer of the Python pandas project and author of the book “Python for Data Analysis”. Wes is PMC member for the Apache Arrow and Apache Parquet projects. He has created or contributed to several other open source projects, including Feather, Ibis and Statsmodels. He was previously an engineer at Cloudera, and was the co-founder and CEO of DataPad.