Data Engineer

Requirement:
Must have ETL background.
Must have Java background (We need core Java, not J2EE, the profile I rejected are advance Java and suited for UI based applications, we are data analytics team). Scala or python may work if not Java but is a must.
Must have Hadoop and Spark knowledge (we are migrating legacy ETLs to Spark based processing framework) Experience in AWS cloud is preferred.
Knowledge of Kafka, Unix, python is desirable.