Mark is chief revenue officer of HubSpot sales products. Prior to this role, he served as HubSpot's senior vice president of worldwide sales and services from 2007 to 2013, during which time he increased revenue more than 6,000 percent and expanded the team from 1 to 450 employees. These results made HubSpot number 33 on the 2011 Inc. 500 Fastest Growing Companies list. Prior to HubSpot, Mark founded or held executive positions at startups in the social media and mobile sectors. Mark started his career as a technology consultant with Accenture, and holds an MBA from the MIT Sloan School of Management and a bachelor's degree in mechanical engineering from Lehigh University.

Mark has been featured in the Wall Street Journal, Forbes magazine, Inc. magazine, the Boston Globe, TechCrunch, Harvard Business Review, and other major publications for his entrepreneurial ventures. He is the author of the bestselling book The Sales Acceleration Formula: Using Data, Technology, and Inbound Selling to Go From $0 to $100 Million. Mark was ranked number 19 of Forbes’ Top 30 Social Sellers in the World. He was also awarded the 2010 Salesperson of the Year at the MIT Sales Conference.