John Graham-Cumming

John Graham-Cumming has been with Cloudflare, Inc. as the CTO since December 2011, starting out as a Programmer and working their way up by running various technical teams. Prior to joining Cloudflare, John worked in a variety of startups from 1992 to 2011, with roles ranging from Programmer to VP of Engineering. John holds degrees from the University of Oxford in Formal Methods for Secure Systems, Mathematics and Computation.