Jessi Hempel is a senior writer at WIRED, covering the business of technology. Before joining WIRED last year, she served as a senior writer for Fortune, where she penned cover stories on Yahoo, Facebook, Twitter, and LinkedIn, as well as IBM and RIM. In the past, she has written in-depth articles on the structural problems that threatened to hinder Twitter’s growth as well as on the emerging competition between Facebook and Google over the social web. Hempel also wrote about design and technology for Businessweek.
Mike Krieger co-founded the photo-sharing social network Instagram, where he is the head of engineering. In 2010, Krieger joined forces with Kevin Systrom to transform a location-based social network named Burbn into the world’s most popular photo-editing and -sharing app. Within hours of launch, 25,000 people had downloaded Instagram. Within months, it had a million users. Over the past five years, Krieger has steered Instagram’s infrastructure through rapid and massive growth. Today, the service has more than 300 million active users. Krieger studied Symbolic Systems at Stanford University, a mix of computer science, design, and cognitive science.