Working in the largest telecommunication company in the world. Being involved in developing extraordinary enterprise solutions. Currently participating in a Customer Experience Management (CEM) Project, which Huawei is implementing for the country's largest data operator (MTNi) as well as MCI. my work here usually involves maintaining the big data lake of user-plane and signaling data, which are Apache Hadoop's family. including Impala and HBase for the data warehouse. and also monitor, refine and T-shoot Hive, Spark, Pig, and zookeeper for the control and calculations. besides, it is my responsibility to create and maintain Business Insight reports using Tableau and my Machine Learning knowledge to verify the data accuracy of our Big-Data system.