Quantcast Software Engineer Interview Questions
The questions to prepare for a Quantcast Software Engineer interview. Questions from real interview reports rank first. Updated weekly.
Compute the minimum jumps to reach the last index using a greedy scan, and relate it to the dynamic programming formulation.
QuantcastImplement an LRU cache using a hash map and doubly linked list to support O(1) get and put operations.
QuantcastTests distributed systems design for replication, consistency, and performance under heavy write load.
QuantcastTests distributed architecture choices for low-latency serving, indexing, and fault tolerance at massive scale.
QuantcastEvaluates your testing strategy and ability to design automated unit tests.
QuantcastDesign a low-latency ad event pipeline processing up to 900K events/sec with accurate click and impression aggregates for reporting and billing.
QuantcastAssesses your ability to design and implement JSON query-by-example functionality.
QuantcastTests system design for real-time, large-scale data pipelines and audience measurement across many web properties.
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Use ROW_NUMBER() to keep the earliest created_at 'Repl created' per entity and return out-of-order duplicates to delete.
ReplitQuantcastRank Natural Intelligence products by completed revenue in the last completed quarter using joins, aggregation, and a date CTE.
Natural IntelligenceRank InMobi Exchange campaigns by conversion rate using joins, aggregation, a CTE, and deterministic ordering.
InMobi