Tessa Pronk is a scientific researcher in the Chemical Water Quality & Health team. She has a broad interest in complex systems and, over the last few years, has worked in various organisations on subjects in the areas of ecosystem biology, (toxico) genomics, IT and data management. She readily applies useful techniques like modelling, machine learning and text mining. She produces scripts to conduct analyses in the R programming language. At KWR, Tessa works on data science strategy and data mining in data-intensive projects. Tessa is co-editor of Data Science Journal.