Leonardo de Moura is a Senior Principal Researcher at Microsoft in the RiSE group. He joined Microsoft in 2006, and before that, he was a Computer Scientist at SRI International. He works with theorem proving and automated reasoning. In 2010, he received the Haifa Verification Award for his work on automated reasoning. In 2014, one of his articles, “Z3: an efficient SMT solver,” was nominated as the most influential tool paper in the first 20 years of TACAS. In 2015, Z3 received the Programming Languages Software Award from the ACM. He received the Herbrand award in 2019 to recognize his numerous and vital contributions to SMT solving.