The name Wes McKinney rang a bell when I was reading a general news article on a hedge-fund developer talking about open source developer stresses. Then I realized that the created of Pandas library, author of the book Python for Data Analysis was working for 2-Sigma now. I also came to know that he is a committer with Apache Parquet project, which is a C++ library for storing data in a columnar fashion. With all these noteworthy implementations aside, Wes seems to have a background in statistics from MIT.
There are many interesting people whose work we use, sometimes unaware of the person behind the project.