Karsten Ahnert is a physicist and software engineer. He received his PhD in theoretical physics at the University of Potsdam in 2011. His work concentrates on nonlinear dynamics and chaotic dynamical systems such as particles dynamics, complex networks, or pattern formation. Numerical simulations are here the key to understand such phenomena and for Karsten C++ is the language of choice when writing high-performance scientific software. Karsten also runs a company focusing on the management and analysis of complex systems.