Balázs Szegedy is a world-renowned expert on the mathematical theory that grew out of the Szemeréd Regularity Lemma, which describes the behavior of very large structures with mathematical tools. He is an ERC and Lendület grantee. He received the following prizes: Paul Erdős Prize (2013), Coxeter–James Prize (2013), Fulkerson Prize (2012), Sloan Research Fellowship (2010), European Prize in Combinatorics (2009), Géza Grünwald Commemorative Prize (2002), Kato Renyi Memorial Prize (1997).
After finishing his PhD in 2003, he held short term positions at Microsoft Research and the Institute for Advanced Study (USA). In 2006, he joined the University of Toronto (Canada) and he returned to Hungary in 2013. Currently he is leading a research group at the Alfréd Rényi Institute of Mathematics.