Sift Science - San Francisco, CA. Full-time. Sift Science (http://siftscience.com) uses large-scale machine learning to fight online fraud. It's a problem that cost U.S. merchants > $10B last year, and 70% of it is organized crime. Attacks have rapidly evolved in breadth and depth, but current rule-based systems don't scale. We're looking for engineers of all flavors -- distributed systems, web development, data visualization, and of course, machine learning. We're a tight-knit team that likes board games, yummy food, and solving challenging technical problems. Check out https://siftscience.com/jobs We're also looking for account managers, integration engineers, and sales folks. Ping us at jobs+hn@siftscience.com or feel free to e-mail me directly at evie@siftscience.com :)