Problem
Scenario
You're working with data that arrives from multiple internal systems before financial analysis begins. The sources do not always line up cleanly, so you need a repeatable way to compare records, resolve differences, and produce a trusted dataset.
Question
What is your process for reconciling data from different sources before analysis?
What this tests
- ETL design for multi-source finance data
- Join strategy across inconsistent business keys
- Data quality checks before analysis
- Idempotent reruns and exception handling
Practicing as: Data Engineer interview at KeyLogicHi, I'll play your KeyLogic interviewer for the Data Engineer role. Candidates describe these interviews as mostly positive and moderately difficult, so expect me to be friendly and conversational. Take your time with the question above and answer like we're in the room.
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