I worked with Jeff Bezos at Amazon in the early 2000s. He was amazingly intense and made me rethink the way I view the world.

David Selinger. Courtesy of David Selinger David Selinger cofounded Deep Sentinel, an AI security firm, after working at Amazon in the early 2000s. At Amazon, Selinger worked directly with Jeff Bezos, which shaped his AI and business acumen. Deep Sentinel, backed by Bezos, uses AI to prevent crime and innovate home security. This as-told-to essay is based on a conversation with David Selinger, the 48-year-old CEO of Deep Sentinel, based in Pleasanton, California. It's been edited for length...