Calin is a Java technical lead, mentor, and speaker with a lot of stories to tell. He has a Ph.D. in graph data analysis. His preferred use cases include real-time recommendation systems, trust & reputation engines, and social ranking algorithms. Naturally, his main passion is Neo4j. Calin now models everything as a graph. This is where he gets stubborn: if you ever meet him, he will spend most of his time convincing you that whatever else you're doing is wrong! Outside of work he refers to himself as an "Enthusiastic Beer Drinker".