Jukka-Pekka “JP” Onnela is Associate professor of Biostatistics in the Department of Biostatistics at the Harvard T.H. Chan School of Public Health. He is also Director of the Master in Health Data Science program, one of three data science programs at Harvard University. He obtained his doctorate in network science in physics in Finland, and his doctoral dissertation received the Dissertation of the Year Award. Prior to starting his faculty position at the Harvard Chan School in November 2011, he completed a junior research fellowship at the University of Oxford, a Fulbright scholarship at the Harvard Kennedy School, and a postdoctoral fellowship at Harvard Medical School. His primary interest is in developing quantitative methods in two areas: statistical network science, the study of network representations of social and biological systems; and digital phenotyping, the moment-by-moment quantification of the individual-level human phenotype using smartphone data. He received an NIH Director’s New Innovator Award in 2013 for his digital phenotyping project.