Sergei Burkov had co-founded and led three Silicon Valley startups: Bilbo Innovations, Invincible (acquired by VASCO Data Security) and Dulance, a product search engine. The latter was acquired by Google, where Sergei became the first head of its Moscow, Russia R&D Center. Sergei worked at leading American Universities, including Cornell and Univ. of Wisconsin and holds PhD in Theoretical Physics from the Moscow Institute of Physics and Technology.