Willem Visser is a part-time professor in the Division of Computer Science at Stellenbosch University (from 2009 till 2013 he was the Head of the Division). His research is mostly focussed around finding bugs in software. More specifically he works on testing, program analysis, symbolic execution, probabilistic symbolic execution and model checking. He is probably most well known for his work on Java PathFinder (JPF) and Symbolic PathFinder (SPF). He previously worked at NASA Ames Research Center, and SEVEN Networks. [Full CV]