CompSci is a Doctoral Programme launched and managed by the Faculty of Mathematics and Natural Sciences at the University of Oslo (UiO). CompSci combines a disciplinary doctoral programme with intensive training in computational and data science. It is partly funded by the EU Horizon 2020 under the Marie Sklodowska-Curie Action (MSCA) - Co-funding of Regional, National and International Programmes (COFUND). The CompSci Doctoral Programme will recruit 32 PhDs in two calls. In this Call, we open for applications to the 2nd cohort of 17 PhD fellowship positions, that will join our PhD programme starting autumn 2022 at UiO.