Cătălin Predoiu graduated the Faculty of Law at the University of Bucharest in 1991. In 1994 he completed a training program in commercial law at the Caen Bar in France. Between 1994 and 2007 he taught commercial law as a lecturer at University of Bucharest. Predoiu published several articles and studies about commercial law and has received a prize from the Romanian Academy as a co-author of a law treatise.
Predoiu is an associate lawyer at the ZRP law partnership since 2005. He is a commercial and corporate governance lawyer, having a Ph.D. degree in commercial banks. Since 2003 he is a member of the Council of Bucharest Bar Association.