I am an engineer and computer scientist based in San Francisco. My interests are machine learning, computer vision, optimization methods, programming languages, compilers, and high-performance computing. I guess you can say I've had a hard time staying faithful to one technical area.

I was a researcher at Microsoft Research Silicon Valley from 2007 to 2014. Prior to that I was at Microsoft Research Cambridge and a research fellow at Trinity Hall in the University of Cambridge. Since 2015 I work at Apple.

To learn more please see my publications or CV.