Data Engineer Interview Questions at Deloitte
5 real Data Engineer interview questions asked at Deloitte. Covers Technical rounds. Sourced from engineers who cleared the loop.
Interview Signals — What Deloitte Asks Data Engineers
All Data Engineer Questions Asked at Deloitte
Explain Snowflake multi-cluster architecture. How does it handle concurrency, and what is the difference between a Virtual Warehouse and the Cloud Services layer?
What is Time Travel in Snowflake and how does it differ from Fail-Safe?
A nightly ETL pipeline occasionally fails midway, leaving the target table with partial data for that day. How would you redesign the pipeline to make a failed run safe to simply re-run?
What is the difference between Snowpipe and a traditional batch COPY INTO for loading data into Snowflake? When would you choose each?
A single Airflow DAG has grown to 40 tasks and is hard to reason about or debug. What signs indicate it should be split into multiple DAGs, and how would you handle dependencies between them?
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