Martin Spielauer is a social scientist with 20 years of experience in microsimulation modelling and projections. He has developed or contributed to models in a wide range of areas, including demography, education, saving and wealth, pension systems, poverty and health. He has been involved in microsimulation projects around the world, including Austria, Canada, France, Finland, India, Japan, Mauritania, Nepal, New Zealand, Slovenia, Spain, the United Kingdom and the United States. He has also given training in microsimulation modelling and programming on countless occasions around the world. Since 2016, Martin Spielauer has been a senior economist at the Austrian Institute of Economic Research (WIFO). He leads the development of the multi-country model microWELT for the comparative analysis of the functioning of welfare states in the context of demographic change. The microWELT model is applied in three European Union H2020 projects as well as in other international projects. As a consultant to the World Bank Development Data Group (2016-2021), Martin Spielauer developed a multi-country portable dynamic microsimulation model for population, education and health applications in developing countries (Dynamis-Pop). From 2018-2023, Martin Spielauer also works as a technical advisor and co-developer of the Slovenian dynamic microsimulation model DypenSi at the Slovenian Institute of Economic Research. From 2007 to 2015 he worked at Statistics Canada, contributing to microsimulation models for population projections and policy analysis. In parallel, he developed extensive international client relationships supporting microsimulation projects of other governments, international organisations, universities and private industry. Martin has published extensively in both peer-reviewed journals and government and international agency publications.