Vassil Alexandrov is an ICREA Research Professor in Computational Science at Barcelona Supercomputing Centre. He holds an MSc degree in Applied Mathematics from Moscow State University, Russia (1984) and a PhD degree in Parallel Computing from Bulgarian Academy of Sciences (1995). He has held previous positions at the University of Reading, UK (School of Systems Engineering, 1999-2010, as a Professor of Computational Science leading the Computational Science research group until September 2010, and as the Director of the Centre for Advanced Computing and Emerging Technologies until July 2010). His expertise and research interests are in the area of Computational Science encompassing Parallel and High Performance Computing, Scalable Algorithms for advanced Computer Architectures, Monte Carlo methods and algorithms. He currently leads the Extreme Computing research group at BSC focusing on developing novel mathematical methods and scalable algorithms for solving problems with uncertainty on large scale computing systems applying the techniques and methods mentioned above.