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Sonal Raj is a hacker, Pythonista, big data believer, and a technology dreamer. He has a passion for design and is an artist at heart. He blogs about technology, design, and gadgets at http://www.sonalraj.com/. When not working on projects, he can be found traveling, stargazing, or reading. He has pursued engineering in computer science and loves to work on community projects. He has been a research fellow at SERC, IISc, Bangalore, and taken up projects on graph computations using Neo4j and Storm. Sonal has been a speaker at PyCon India and local meetups on Neo4j and has also published articles and research papers in leading magazines and international journals. He has contributed to several open source projects. Presently, Sonal works at Goldman Sachs. Prior to this, he worked at Sigmoid Analytics, a start-up where he was actively involved in the development of machine learning frameworks, NoSQL databases, including Mongo DB and streaming using technologies such as Apache Spark.