Kjeld Schmidt was born in 1945 in Esbjerg, Denmark. Initially a software programmer (1965-72), he was awarded the MSc degree in sociology from the University of Lund, Sweden, in 1974. After a decade of research focusing on processes of socio-economic transformation, he decided in 1985 to devote his energies to the — then only emerging — area of Computer-Supported Cooperative Work (CSCW), first as a researcher in private industry but from 1989 at Risø National Laboratory. From 1998, he has held faculty positions at universities in the Copenhagen area and is now professor emeritus of Work, Organization, and Technology at Copenhagen Business School. — Schmidt has been the Editor-in-Chief of the CSCW Journal since 1992. His main scholarly contributions to CSCW have been centered on what can be termed its conceptual foundations. In this line of work, he has, for example, contributed to the clarification of key concepts such as ‘work’, ‘cooperative work’, ‘awareness’, ‘knowledge’, and ‘practice’. In his technology-oriented research, he has been deeply involved in the development of computational technologies that will enable ordinary workers to express and execute the protocols of their coordinative practices such as workflows and classification schemes in a fully distributed and flexible manner.