The M3S (Empirical Software Engineering in Software, Systems and Services) research unit (http://www.oulu.fi/m3s) in the Faculty of Information Technology and Electrical Engineering (ITEE, http://www.oulu.fi/itee/) at the University of Oulu, is now hiring highly motivated candidates for doctoral student positions. The candidates are expected to complete a doctoral degree in four years in the Doctoral Programme of Information Processing Science, at the University of Oulu Graduate School (UniOGS).