Erin LeDell is a statistician and machine learning scientist at H2O.ai, the company that produces the open source machine learning platform, H2O. She is the author of a handful of machine learning–related software packages, including the h2oEnsemble R package for ensemble learning with H2O. Erin received her PhD in biostatistics with a designated emphasis in computational science and engineering from UC Berkeley. Her dissertation focused on scalable ensemble learning and was awarded the 2015 Erich L Lehmann Citation by the UC Berkeley Department of Statistics. Before joining H2O.ai, she was the principal data scientist at Wise.io and Marvin Mobile Security (acquired by Veracode in 2012) and the founder of DataScientific, Inc.