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Department of Software Science

  • It is with great sadness that we share the news that our former colleague Jan Willem Klop passed away on September 28, 2025. From from 1998 until 2007 Jan Willem was part-time Professor at our university. Jan Willem made foundational contributions to the areas of term-rewriting systems and process algebras, which have strongly influenced the research within our Software Science group until today. We will remember Jan Willem as a very kind person, with a strong sense for mathematical elegance, and as an excellent lecturer.
  • Jana Wagemaker received a VENI grant for research on Foundations of Runtime Verification of Hyperproperties.
  • Sebastian Junges serves as PC co-chair for TACAS 2026, Robbert Krebbers as PC chair for ESOP 2026, PC co-chair for ECOOP 2026 and 2027, and as associate chair for POPL 2026, and Marielle Stoelinga as PC co-chair for FM 2026.
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Software has shaped every aspect of our modern lives. Providing programmers with tools that elevate their productivity, simplify code maintenance, and ensure that software is correct, efficient, dependable and sustainable, is both a major scientific challenge and an enterprise with enormous societal relevance. Our mission is to conduct world-leading research on the use of high-level specifications and models for design and analysis of software, bridging the gap between theory and applications.

We have expertise covering a broad range of topics concerning analysis of computer-based systems, mathematical foundations, and software construction. We collaborate with stakeholders from industry and other application areas, trying to understand how our research can contribute to solving real-world problems. Our group is member of the IPA, the Dutch Institute for Programming research and Algorithmics, partner of ESI, and supports VERSEN, the Dutch National Association for Software Engineering. TOP Software Technology is a spin-off company founded by members of our group.