Nick has built everything from peer-to-peer networks, to iPhone applications, to the software inside black vans. Most recently, he built the Hadoop infrastructure at Mochi Media. He founded MixApp with Geoff, where he invented a technique for opening bidirectional connections through NATs by embedding a TCP stack in user-space. As an undergraduate at MIT, he wrote cryptography software that let groups of people have secure, anonymous conversations over mailing lists.