For any Data Engineer Interview, you will be tested your knowledge of Data Warehousing, Data Modeling, Complex SQL, Big Data Technology, and your ability to solve a problem end-to-end from a Data Engineering perspective. To crack any data engineer interview, you need to proficient with SQL, Hadoop, Hive, Apache Spark, and Scala. If you have these skills, you can crack any data engineer interview.
Also, check out this blog on Data Engineer Interview Questions for most frequently asked questions in Data Engineer interviews.
You can watch this video on Data Engineer Interview Preparation: