Keijo Mattila attained PhD in Scientific Computing (University of Jyväskylä, Finland, 2010) after which he did a two years post-doc period (2011-2013) at the Federal university of Santa Catarina, Florianópolis, Brazil. Since returning to Finland he has worked in several research projects (with research as well as management tasks). His main research interests include mathematical modelling, computational physics, numerical methods, and high-performance computing. The development and application of the lattice-Boltzmann method to complex transport phenomena are particular research topics of his. Currently he is employed by the University of Jyväskylä and, in addition, works as an external researcher at the Tampere university of technology, Finland.