João Freitas is the CTO of DefinedCrowd. João coordinates all IT and AI initiatives at DefinedCrowd and manages EU operations. With more than 13 years' experience in software development, machine learning and crowdsourcing, João also holds a PhD in the areas of speech technology and human-computer interaction. João has filed several patents and published over 30 articles in peer-reviewed international conferences and journals. He is also the author and co-author of book chapters and one book.