Welcome to your interview.
The question is on your right: ETL for Market Pricing Data. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Design an ETL pipeline to ingest high-frequency market pricing data at Koch Minerals & Trading; how do you handle schema drift and late-arriving data?