I applied online. I interviewed at VNGRS (Istanbul) in Sept 2021
Interview
You're first invited to an English proficiency interview (for non-native-speakers). Passing this step, a technical interview is placed, to understand your skills on a high level. Then you're invited to take a HackerRank challenge and a follow-up evaluation session regarding your implementations. Passing this step, you may or may not get a work proposal by the company.
Interview questions [1]
Question 1
Apache Spark fundamentals (RDDs, how fault tolerance is provided with RDDs), SQL related questions (indexes, window functions)