I got placed in Micron India as a Big Data Engineer, can you tell me which technologies I should know to serve role?

Hi Rohit, a big welcome to you! In general, as a big data engineer in Micron, you are expected to have good knowledge and skills in Hadoop ecosystems (Hadoop, Hive, HDFS, Spark, HBase etc.), ETL using Apache Ni-Fi, SQL, Python/Scala, basics in data analytics methods. However, big data roles in different team may have slightly different focus, which means your role may requires you to be very strong at one specific skill mentioned above, while having basic understanding of the rest. I strongly encourage you to have a chat with your hiring manager to understand more on this front.