Ari Juels is the Weill Family Foundation and Joan and Sanford I. Weill Professor of Computer Science at Cornell Tech, co-director of the Initiative for CryptoCurrencies and Contracts (IC3), and chief scientist at Chainlink Labs. A globally recognized leader in applied cryptography and decentralized systems, Juels is best known for foundational contributions to blockchain security, privacy-preserving protocols, and cryptoeconomic design. Among his most influential and recent achievements are advances in zk-TLS and practical privacy-preserving data-sharing systems, as well as new architectures that combine trusted execution environments (TEEs) with blockchains to enable confidential computation for real-world applications. His research has also helped shape the modern study of Miner/Maximal Extractable Value (MEV), providing formal frameworks for understanding transaction ordering, incentive manipulation, and fairness in decentralized networks. At Chainlink Labs, Juels co-authored the original Chainlink white paper and has played a central role in defining secure, privacy-preserving oracle and data-verification infrastructures for on-chain and hybrid systems. Earlier in his career, he served as chief scientist and director of research at RSA Laboratories and as a distinguished engineer at EMC Corporation. Juels is also the author of the cryptographic thrillers The Oracle and Tetraktys, and holds a Ph.D. from the University of California, Berkeley.