Ari Juels is the Weill Family Foundation and Joan and Sanford I. Weill Professor in the at  and a Computer Science faculty member at . He is a Co-Director of the .

He was the Chief Scientist of RSA, Director of RSA Laboratories, and a Distinguished Engineer at EMC (now Dell EMC), where he worked until 2013. He received his Ph.D. in computer science from U.C. Berkeley in 1996.

His recent areas of interest include blockchains, cryptocurrency, and smart contracts, as well as applied cryptography, cloud security, user authentication, and privacy.