Nathan is the co-founder and CTO at Airbnb. He oversees the technical strategy of the company, and is dedicated to building a team of world-class engineers to keep Airbnb at the forefront of the industry. Nathan became an entrepreneur early on running a business while he was in high school, selling to clients in more than 20 countries. He received a degree in Computer Science from Harvard University and held several engineering positions with Microsoft, OPNET Technologies and Batiq before becoming a co-founder at Airbnb. Nathan Blecharczyk is one of the world's youngest billionaires, just a year older than Mark Zuckerberg and Dustin Moskovitz of Facebook fame. He is cofounder and chief technology officer of Airbnb, which lists 1 million homes, or rooms in people's houses or apartments, for rental stays. As of early 2015, 30 million guests had used the service since it launched in 2008, including 20 million in 2014 alone. An employee share sale valued the company at $13 billion in October 2014.