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Senior Fellow at Groupon and creator of Repsheet http://getrepsheet.com. Thoughts are my own. bio from Twitter
Application Security Engineer, Twitter
Justin is a Ph.D. candidate at UCLA and currently works as an application security engineer at Twitter.
CTO, Mint Digital
Thomas is CTO at Mint Digital where he has worked since the very beginning after acing the interview almost purely on the back of a sharp suit. Having been involved in all of Mint's major projects he has great real world experience in developing mass participation web sites quickly and effectively along with some hard lessons learnt on how to make them stay up. He mainly hacks in ruby although has a growing love for erlang.
Past speaking gigs include Scotland on Rails, London Ruby Users Group and Kings of Code.