Marcus graduated as a cognitive psychologist (University of Linköping, Sweden) and possesses a PhD in Human Factors (2017, University of Kassel, Germany). Between 2017-2019 he worked in DB Fernverkehr (DB “Long-Distance Traffic”) as a safety officer (integrating HOF in accident and event analysis). Since 2020 he has been with DB InfraGO AG focusing on integrating HOF in risk analyses, accident & event analysis and in monitoring of rules compliance.