Achilleas Athanasiou Fragkoulis is a Product Analyst at Expedia Group. He supports product teams at Hotels.com through the Test and Learn cycle, researching methods and developing tools to accelerate experimentation at scale and promote data-driven product decisions. With a background in experimental particle physics and psychology, he has served as the commercial director for a specialty food and drinks start-up and co-founded an online retail wine shop. He holds a kitesurfing related Guinness World Record.