Career
He works at the Rényi Mathematical Institute of the Hungarian Academy of Sciences, and has a part-time job at University College London. He was an invited speaker at the Combinatorics session of the International Congress of Mathematicians, in Beijing, 2002. In 2012 he became a fellow of the American Mathematical Society.
He is an Editorial Board member for the journals Combinatorica, Mathematika, and the Online Journal of Analytic Combinatorics".
He is area editor of the journal Mathematics of Operations Research.