Markus Blatt is an applied mathematician and active C++ Developer. His first experiences with C++ programming date back to 1998. Since 2004 he is a core developer of the open source library DUNE (Distributed and Unified Numerics Environment); a library for the parallel solution of partial differential equations. During his PhD he parallelized its iterative solvers and ported them to current supercomputers like the IBM Blue Gene. Since 2011 he is offering parallel simulation software made to meassure, consulting, and training for DUNE/parallel C++ programming.