Hadley Wickham

tidyverse; Posit; "R for Data Science"

Chief Scientist at Posit (formerly RStudio), where he leads open-source R tooling development. He created ggplot2, dplyr, tidyr, and the broader tidyverse ecosystem, establishing a coherent grammar for data manipulation in R. Co-author of 'R for Data Science', the field's most widely used introductory text.