Maciej specialises in both Polish and EU competition law and consumer protection issues. He counsels business clients in the following fields: merger control, agreements restricting competition, abuses of a dominant position, infringements of collective interests of consumers, and unfair trade practices.
Graduate of the Faculty of Law and Administration and the Faculty of Philology of the University of Łódź, and the Legal Studies Department at the College of Europe in Bruges where he obtained an LLM. He also completed the School of German Law organised by the University of Łódź in collaboration with the Wilhelm University in Münster and the School of French Law organised by the University of Poitiers in collaboration with the University of Warsaw.
He is a member of the Warsaw Bar Association of Advocates and the Competition Law Association.