Achim Ahrens was a Postdoctoral Research Fellow at the ESRI from September 2017 to August 2019. He holds an MSc in Economics from the University of Edinburgh and a PhD from Heriot-Watt University. Prior to taking up his role at the ESRI, he worked as a Research Associate in Heriot-Watt University. At the ESRI, Achim worked on regional topics, commuting behaviour and the evaluation of Rent Pressure Zones in Ireland. Achim’s research interests include applied econometrics, Machine Learning and spatial econometrics. In September 2019 he joined the Public Policy Group (https://pp.ethz.ch/) at the ETH Zurich.