Sam Zietz is the founder and CEO of the financial technology company GRUBBRR. In 2015, Sam was a recipient of the prestigious EY Entrepreneur of the Year Award in Florida, and he has served on the judges' panel for the annual program since 2018. His companies have also appeared on the INC 500 list eight times.

Zietz sits on the board of several educational and entrepreneur-focused organizations, including the Palm Beach chapter of the Young Presidents Organization (YPO), Chief Executives Organization (CEO), Florida Council of 100 and the Orange Bowl Committee. He speaks regularly at professional events and universities, has testified before Congress on Entrepreneurship and given a TED talk on achieving success through the entrepreneurial path. He is also an active angel investor with numerous investments under management. He has also raised two successful teenage entrepreneurs who both created multi-million dollar companies before they turned eighteen.