Konstantin Guericke is the CEO of jaxtr, a social communications start-up. Konstantin was the co-founder and VP of Marketing at LinkedIn, where he led the effort to educate users about how to advance their career and business through their trusted contacts on LinkedIn. Prior to LinkedIn, Konstantin served as VP of marketing at Presenter, where he led product management, product marketing and corporate marketing. Before Presenter, Konstantin was responsible for the initial public launch of social software pioneer Black Sun Interactive as VP of sales and marketing. Konstantin has also held other key leadership roles including EVP at Caligari and project director of publicly-traded Micrografx. At Beresford Partners, Konstantin helped the CEOs of over two dozen high-tech startups develop their positioning and marketing strategy. He graduated with distinction from Stanford University with a B.S. and M.S. in Engineering.