Founder and Executive Chairman @CircleUp. Follow me on Twitter @ryan_caldbeck

General Partner and Co-Founder of Craft Ventures. Previously: Founder/CEO of Yammer. Original COO of PayPal.

Psychologist, Writer, Researcher and Podcast Junkie.

Author, Actuary, Leadership mentor and Adventurer, specialising in leveraging leadership for high-performance and high-engagement in the workplace.