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Ramon Caceres   Ramón Cáceres

    Email: ramon@kiskeya.net

Bio Projects Publications Press Awards CV Sailing


I am a software engineer at Google. I was previously a computer science researcher at Bell Labs, AT&T Labs, and IBM Research. I have also held leadership positions in several startup companies, including chief scientist of Vindigo, a pioneer in location-based mobile applications. My areas of focus include computer systems and networks, mobile computing, human mobility, security, and privacy. I hold a PhD in Computer Science from the University of California at Berkeley. I am an IEEE Fellow and an ACM Distinguished Scientist. I serve on the board of the CRA Committee on Widening Participation in Computing Research.

My CV contains a more complete career history.

Recent projects

I am building privacy infrastructure used by Google products serving billions of people. In particular, I have improved the scalability, reliability, and security of Zanzibar, a global authorization system that respects causal ordering of user actions.

Zanzibar stores and evaluates permissions to access digital objects managed by hundreds of client services at Google, including Calendar, Drive, Maps, Photos, and YouTube. It stores trillions of permissions and serves millions of authorization requests per second. It has maintained 95th-percentile latency of less than 10 milliseconds and availability of greater than 99.999% over years of production use. Outside Google, Zanzibar has inspired multiple independent implementations, including the Ory Keto open-source project and the Authzed system as a service.

My CV outlines other previous work.


Selected press coverage

  • Human mobility
  • SoulPad
  • Vindigo
    • The Top 100 Products of 2000, ZDNet, November 20, 2000.
    • Best of What's New 2000: Suggestive Software, Popular Science, November 13, 2000.
    • Personal-Navigation Tools Can Answer Some of Life's Key Questions, Wall Street Journal, November 11, 2000.
    • Shopping in Palm of the Hand Is Making Its Holiday Debut, NY Times, November 11, 2000.
    • Virtual City Guides Help Navigate The Real World, SF Gate, October 29, 2000.
    • Vindigo Makes the Palm an Essential Leisure Tool, LA Times, October 19, 2000.
    • CNet Editors' Top 5 Palm Apps, CNet, August 25, 2000.
    • Ten Things You Didn't Know Your Palm Pilot Could Do: Find a Nearby Bar, Rolling Stone, June 8, 2000.


Last updated 29 September 2021 by Ramón Cáceres