David Graus is lead data scientist at Randstad Groep Nederland, where he leads the data science chapter with over a dozen data scientists who work on a wide variety of projects including recommender systems, information extraction from resume and vacancy data, and knowledge graphs. Prior to joining Randstad David worked on news recommendation at the FD Mediagroep, a Dutch media company that owns a newspaper and radio station. He obtained his PhD in Information Retrieval in 2017 at the University of Amsterdam, where he worked on semantic search and computational methods for automated understanding of large-scale textual digital traces under supervision of prof. dr. Maarten de Rijke.