Ondřej Čertík is a scientist at Los Alamos National Laboratory. Originally from the Czech Republic, his background is computational physics and high performance computing. In addition, he has been actively involved in open source, he is the original author of SymPy, SymEngine, LFortran and a co-founder of the fortran-lang organization. His current mission is to rejuvenate Fortran, a language for high performance numerical computing. He likes and uses C++ as a great tool that allows him to deliver robust, very fast libraries and applications, including SymEngine and the LFortran compiler.