Emre Velipasaoglu is a Principal Data Scientist at Lightbend. He has worked in various labs and start-ups as a researcher, scientist, engineer and manager for over 20 years, including several years at Yahoo! Labs as a senior scientist, where Emre and his team built the machine learning ranking models for Yahoo! Search. His expertise spans machine learning, information retrieval, natural language processing and signal processing. He holds a Ph.D. in Electrical and Computer Engineering from Purdue University.