Yossi Matias is the managing director of Google Tel Aviv R&D Center, which he established and is responsible for its strategy and operation. Under his leadership, the center has grown to become a significant source for innovative Google technologies and products, including Google Trends, Google Insights for Search, Google Visualizations, and technologies related to Search, Gmail, and YouTube.

Prof. Matias is also on the CS faculty of Tel Aviv University (on leave), and previously a Research Scientist at Bell Laboratories and a visitor at Stanford.  He earned his PhD (with distinction) from Tel Aviv University and his Master (with excellence) from the Weizmann Institute of Science. Previously he served in the Israeli IDF as an Israeli Air Force pilot.

Matias has authored over 100 scientific and technological research papers and is the inventor of over 20 patents, in the areas of data analysis, algorithms for massive data sets, data streams and synopses, parallel algorithms and systems, data compression, data and information management systems, security and privacy, video processing, and Internet technologies.

He is serving on the ACM Kanellakis Theory and Practice Award committee, on the founding steering committee of the Israeli Academic Grid, and was a member of a national committee evaluating strategies for Grid technologies; he was a member of numerous scientific program committees, and an invited speaker or numerous conferences. He is a program co-chair of ICALP'09, the primary European Conference on Theoretical Computer science.
Matias is a recipient of the 2005 ACM-EATCS Gödel prize in Computer Science "for the profound impact on the theory and practice of the analysis of data streams". His work was instrumental in setting up a scientific field of algorithmics for massive data sets, and technologies now extensively used in industries involving massive data sets.

Matias has been extensively involved over the years in industrial technology and product development as an entrepreneur and executive, in the areas of search technologies, Internet privacy, database technologies and business intelligence.