Primary Role
CEO at 15Five
Tufts University

Person Details


David Hassell is a serial entrepreneur presently engaged in launching 15Five, a SaaS product that helps companies surface problems, celebrate wins, discover great ideas and stay tuned in to morale. It does this by gathering feedback from every employee on a weekly basis and bubbling up the key points. See

He recently served as President of the San Francisco chapter of Entrepreneurs' Organization (EO,, an International network of entrepreneurs who each have businesses with annual revenues in excess of $1mil, and was named "The Most Connected Man You Don't Know in Silicon Valley" by Forbes, who has also featured him as an expert on entrepreneurship.

In 2004, he co-founded Kite Adventures, an adventure travel company offering guided downwind tours and pro-coached kiteboarding camps in northeast Brazil.

He is also co-founder of Endai Worldwide, a NYC-based Internet marketing and services firm founded in 1999, and served as the company's CTO through 2006. Endai has been recognized on the Inc 5000 list of fastest growing private companies in America.

David holds a BSCPE in Computer Engineering from Tufts University, resides in San Francisco, and is an avid kiteboarder and skier. In his spare time, he likes to help entrepreneurs and their executive teams discover their company’s ideal strategy.

Experience (3)


Education (1)