Language of new opportunities
Both for data scientists and data engineers
Knowing Scala, you will write more stable and faster applications on Apache Spark. You won't have to wait until new features are implemented in Python API. You will not be terrified by number of lines written in Java. You will be able to work with Apache Flink and Akka and write ML code in production, including using libraries XGBoost4j, Deeplearning4j.