- Adjunct department philosophy Warsaw University, Poland, 1972-1982, docent Poland, 1983-1993, professor Poland, since 1993, dean philosophy and sociology faculty Poland, since 2000.
Author: The Methodological Problems of theScientific Revolution in Chemistry, 1975, The Search for the Laws of the Growth of Science, 1980. Co-author, co-editor: The Relationships between the Theories and the Growth of Science, 1978, Episteme. Some Problems of the Theory of Knowledge, 1995.
Member editorial board Philosophical Study, 1985, Philosophy of Science, 1992. Contributor articles on philosophy, methodology and history of science to professional journals.