Mounia Lalmas is a Director of Research at Yahoo London. Her work focuses on studying user engagement in areas such as native advertising, digital media, social media, and search. She also pursue research in social media and search. She also hold an Honorary Professorship at University College London. Prior to this, she held a Microsoft Research/RAEng Research Chair at the School of Computing Science, University of Glasgow. Before that, she was Professor of Information Retrieval at the Department of Computer Science at Queen Mary, University of London.