CoinDCX Data Engineer Interview Questions
The questions to prepare for a CoinDCX Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Calculate each user's monthly transaction volume and change from the previous recorded month using PostgreSQL window functions.
Aggregate user engagement by feature and date, then compare daily activity with the previous available date.
Use LAG and conditional aggregation to identify accounts with repeated transactions occurring within short time intervals.
LyftAssesses understanding of DataFrame vs Dataset abstractions and their trade-offs.
Tests knowledge of Spark query optimization and practical performance impact.
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Evaluates pipeline design for low-latency, high-throughput financial data streams.
Evaluates system design thinking for real-time or near real-time dashboards in a crypto exchange context.