BIG DATA: Hadoop 2, Flume Ng, Spark, Spark Streaming, Cassandra (NoSQL), Tableau, Mahout, D3.js, Visual sedimentation, Play Framework . OOP (Object-oriented programming) : Java, C++. SQL Language: MySql, SQL Server Web Development: HTML + PHP + CSS. Wordpress CSM. WooCommerce,. AI (Artificial Intelligence): Recommendation, Clustering and Filtering Algorithms.