I have given interview for Java engineer - Flink Role. And the first round was a HackerEarth test - where they asked about quality, Flink related, one design questions and one AI question, and no DSA. I was selected and been moved to second round which was a technical discussion with one of the architects I believe, - I was rejected - Again no DSA asked, though questions were mostly related to my contributions to projects, they asked basic questions on Spring Boot, SOLID principles and in-depth of Kafka and Flink. Here they mostly expects an engineer where they need in-depth knowledge of Kafka and Flink.

One thing about Flink and Kafka is about the depth of these concepts, how Flink stores the checkpoints, which storage it actually goes, how do we debug if an issue occurs in checkpoint.

In Kafka - they asked how messages are stored and how do we see those messages from the backend. What is the storage device these messages get stored.