Armin Rigo is one of the initiators of the PyPy project, motivated by previous Python-related experience. Indeed, he contributed to the standard CPython interpreter and developed Psyco, a "just-in-time specializer" which can transparently accelerate user code. He is a member of the Python Software Foundation. After studies at the University of Lausanne (Switzerland), he obtained a Ph.D. in Mathematical Logic and Set Theory at the Free University of Brussels (Belgium) in 2001. He was a researcher at the University of Southampton (UK) and is now a researcher at the Heinrich-Heine University of Duesseldorf (Germany). His current interests are in dynamic programming languages and their implementation techniques. His previous work includes 3D modelling and games and education software. He is always quickly building some game or system tool.