Šimon Schierreich is a postdoctoral fellow at the AGH University of Krakow, working with Professor Piotr Faliszewski on the ERC-funded project PRAGMA. He received his PhD from the Czech Technical University in Prague, where he was part of the G²OAT research group supervised by Professor Dušan Knop. His research explores how computational methods can make collective decisions like participatory budgeting, resource allocation and coalition formation more fair and efficient. He combines theoretical tools from parameterised complexity and algorithmic game theory with experimental evaluation to determine when these problems are tractable in practice and to validate the algorithmic solutions and mathematical models underlying these problems on realistic instances.