David Beyer is a partner at Amplify Partners. He joined Amplify in 2013. He served as CEO of Chart.io. He was a co-founder of J2DR and also served as its CEO. Prior to joining Amplify Partners, David worked as a venture-backed entrepreneur and early stage investor. He began his career in technology as co-founder and CEO of Chartio.com, a pioneering provider of cloud-based data visualization and analytics. Subsequently, he was a founding team member of Patients Know Best, one of the world's leading cloud-based personal health record companies. He is an angel investor.