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 and clarity. I went to Stanford but didn't finish my degree, so I went back in 2000 to finish. In 2002, I got hired at Amazon through on-campus interviews while still in college. I worked at Dutch Bros , now a publicly traded coffee company, then. I was running their tech side. I didn't initially want to work at Amazon , but I