Nikolai Tillmann's short biography:

Since 2001, Nikolai Tillmann is a Research Software Design Engineer in the Foundations of Software Engineering (FSE) group at Microsoft Research in Redmond, USA.

His main area of research is program specification, analysis, testing, and verification. He is leading the Pex project, a framework for runtime verification and automatic test case generation for .NET applications based on parameterized unit testing and dynamic symbolic execution.

Previous projects he worked on include AsmL, an executable modeling language, and the Spec Explorer 2004 model-based testing tool. He contributed to XRT, a concrete/symbolic state exploration engine and software model-checker for .NET code. Spec Explorer 2007 is based on this engine, which is now productized internally by the Protocol Engineering Team at Microsoft to facilitate quality assurance of protocol documentation (link).

He received his M.S. ("Diplom") in Computer Science from the Technical University of Berlin in 2000.