Leif is Partner at Prehype, a venture development firm in New York City. He creates new digital products and companies together with startups and bigger corporations. He also serves as Creative Director for Bark&Co, mentor at startup accelerators Rock Health and Urban.Us and teaches product innovation at the Miami Ad School. Leif co-founded Pay with a Tweet, a social payment system that lets people sell and buy stuff for the price of a Tweet. In 2013, Pay with a Tweet got acquired by HanseVentures, Germany. Before that he was Creative Director, Product Experience at West Studios in San Francisco. A hybrid of startup accelerator and marketing agency that helps tech companies like Jawbone and Rdio grow. He was also a Creative Director at R/GA in New York and worked at CP+B and Jung von Matt in Germany. He has won over 150 awards, including two Cannes Lion Grand Prix and a MTV OMusic Award. In 2011, AdWeek named him one of the "top 10 most creative minds in digital."