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Roman Semenov is Co-Founder of PepperSec, building Tornado.Cash and other privacy and scalability related stuff for Ethereum. Currently working on zkSNARKs and Plasma implementation for Ethereum. He is zkSNARK Researcher, Backend Developer, Blockchain researcher and developer, the winner of several ETHGlobal Hackcthons. Co-founder of RedHelper Company and Viking Studio. Roman has huge experience and participated in such blockchain projects as Token MultiSender (official bridge between ETH and ThunderCore), Tornado Mixer, zDai and Plasma Implementation.