João Graça is a co-founder and the CTO of Unbabel. He did his PhD in Natural Language Processing and was a Post-Doctoral Researcher at the University of Pennsylvania, where he developed a new statistical learning method that allowed for the insertion of declarative knowledge during learning, unlocking previously impossible-to-tackle problems for solving. João was also awarded a Marie Curie, Welcome II program (2011) Scholarship, which he ended up declining to pursue entrepreneurship. He is also one of the co-founders of the Lisbon Machine Learning Summer School (LxMLS).