Nenovsky specialized in the European University Center of Nancy, France (1965-1966), in the International Faculty of Comparative Law in Strasbourg.
His scientific career includes: Assistant at the Faculty of Sofia University "St. Kliment Ohridski "general theory of state and law (1962-1975 years).
Senior research associate at the Institute for Legal Studies at the Bulgarian Academy of Sciences (1975), Professor at the Institute for Legal Research, at the Bulgarian Academy of Sciences (1990).
He was Chairman of the management of the Law Section at the Union of Scientists in Bulgaria (1990-1991).
Founding member of the Bulgarian Association for Philosophy of Law and Social Philosophy (1985), which he chaired from 1990 Member of the editorial board of the journal "Legal Thought" in 1990, the editor of the same journal (1995-1999 .