Joohyun Kim is senior data scientist at MyFitnessPal, Under Armour—Connected Fitness, currently working on various data science projects including food categorization and RecSys. Prior to MyFitnessPal, he worked on machine learning based fraud detection at eBay. He received his Ph.D in Computer Science from the University of Texas at Austin. During his Ph.D, he specialized on semantic parsing/understanding and other related NLP problems. His most recent interests include how to build large-scale distributed systems and algorithms for machine learning and NLP.