Klaus G. Troitzsch was a full professor of computer applications in the social sciences at the University of Koblenz from 1986 until his retirement in 2012. Since then has continued writing, reviewing, supervising PhD theses and participating in conferences.

After earning his first degree as a political scientist, Klaus was a member of Parliament of Hamburg from 1974 to 1978. He returned to academia in 1979 after completing his PhD in political science at the University of Hamburg – first as a senior researcher in an election research project and then as full professor of computer applications in the social sciences.

His main interests in teaching and research are social science methodology, especially modelling and simulation in the social sciences. Among his main research projects are:

• MIMOSE which developed a declarative functional simulation language and tool for micro and multilevel simulation (1986–1992).
• FIRMA, an EU Fifth Framework funded international research project named Freshwater Integrated Resources Management with Agents (2000–2003) where his team was, among others, responsible for the simulation aspects.
• EMIL, an EU Sixth Framework project on the emergence and innovation of norms in social systems (2006–2009). This project, too, used agent-based simulation.
• OCOPOMO, an EU Seventh Framework project on open collaboration in policy modelling (2010–2013).
• GLODERS, another EU Seventh Framework project on the global dynamics of extortion racket systems (2012–2015) where his team was responsible both for text and data mining and for agent-based simulation.

Klaus has authored, co-authored and co-edited numerous books and articles on simulation. He has also organised or co-organised many national and international conferences in the field.