Leif is the co-founder, CEO of the freelancing software AND CO and a Partner at Prehype, a venture development firm in New York City. 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 CD, 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 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."