DoubleVerify Backend Engineer Interview Questions
The questions to prepare for a DoubleVerify Backend Engineer interview. Questions from real interview reports rank first. Updated daily.
Write a binary search function to find a target value in a sorted array.
DoubleVerifyExplain how to derive time and space complexity for a coding solution and justify the final Big O bounds.
DoubleVerifySum the Time values for objects whose isTrusted field is true using a linear scan.
DoubleVerifyAssesses your ability to reason about architectural tradeoffs and overcome design challenges.
DoubleVerifyEvaluates your system design thinking for scalable REST services and efficient data access.
DoubleVerifyTests reliability engineering practices like retries, timeouts, fallbacks, and resilience patterns.
DoubleVerifyAssesses your understanding of SQL joins and correct query construction.
DoubleVerifyTests your understanding of performance, correctness, and scalability trade-offs under concurrency.
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Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
Meta
Spotify
Meta ITFind the top 10 products by total sales revenue using joins, aggregation, and a CTE.
RTX
iSmile Technologies
CatalinaAggregate completed PlayStation Store purchases and return accounts with at least two qualifying purchases.
PlayStation