Gadiel Seroussi received the B.Sc. degree in electrical engineering, and the M.Sc. and D.Sc. degrees in computer science from Technion—Israel Institute of Technology, Haifa, Israel, in 1977, 1979, and 1981, respectively. From 1981 to 1987 he was with the faculty of the Computer Science Department at Technion. In 1982–1983, he was a Postdoctoral Fellow at the IBM T.J. Watson Research Center, Yorktown Heights, NY. From 1986 to 1988 he was a Senior Research Scientist at Cyclotomics Inc., Berkeley, CA. In 1988 he joined Hewlett-Packard Laboratories, Palo Alto, California, where he founded the Information Theory Research Group and was its director until 2005. In 2005–2006, he was Associate Director of the Mathematical Sciences Research Institute in Berkeley, California. From 2015 to 2020, he was with Xperi Corp. (formerly DTS Inc.), Los Gatos, California, working on digital audio processing and compression, and on applications of deep learning to audio and imaging. He has been an independent consultant, based in Cupertino, California, since 2006. He also holds a joint appointment in Computer Science and Electrical Engineering on the faculty of Universidad de la República, Montevideo, Uruguay, where he visits periodically for teaching and research activities.
Seroussi has published extensively in information theory, error correcting codes, data compression, image processing, and cryptography. He is a co-author of the book Elliptic Curves in Cryptography (1999), and a co-editor of Advances in Elliptic Curve Cryptography (2005), both published by Cambridge University Press. In addition, he is named as an inventor or co-inventor on more that 85 granted U.S. patents.