During the Codemotion Amsterdam 2019 conference, Claudia Vicol delivered the talk “Solving the multi armed bandit problem”. We asked Claudia these questions: how important are math and data science for recommendations systems? And generally speaking? Scala is currently your preferred language. How can diverse languages help developers unleash their creativity or achieve results? As a woman in tech, what skills are needed to succeed? Can you share with us how these are part of your daily routine?