I am a Principal Research Manager at Microsoft Research, Redmond, where I lead the Cryptography and Privacy Research Group. I graduated with an MSc in mathematical physics from University of Helsinki and with a PhD in mathematics from UC Berkeley, after which I joined Microsoft in 2015. My interests today are broadly in applied cryptography, privacy, and security.
Much of my work in recent years has been in homomorphic encryption and its applications. For example, I have built much of the Microsoft SEAL homomorphic encryption library and of the APSI private set intersection library, co-organizers of the HomomorphicEncryption.org standardization initiative. I am also particularly interested in privacy and compliance issues that arise from modern machine learning practices.