Dataminr Software Engineer Interview Questions

The questions to prepare for a Dataminr Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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CodingStart here. 23 questions · ~267 min

Filter Collection by CriteriaEasy

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Filter Dataminr First Alert events by multiple criteria while preserving input order and using a set for efficient category checks.

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Implement an Event EmitterMedium

Practice

Implement ordered event subscriptions with one-time listeners and unsubscription using hash maps and list filtering.

javascript

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System Design4 questions · ~46 min

Knowledge Graphs for LLMsHard

Assesses your ability to explain how structured knowledge improves LLM performance and reliability.

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Scalable Real-Time Event RetrievalHard

Tests your system design for low-latency retrieval and matching at scale.

Cold StartFeature StoreRetrieval

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Execution3 questions · ~35 min

SQL vs NoSQL TradeoffsMedium

Tests your data modeling and storage selection reasoning for scale and reliability.

InfrastructureTrade-offsData Wrangling

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Behavioral & Leadership14 questions · ~163 min

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More topics3 questions · ~35 min

Real-Time Data Processing DesignHard

Design a fault-tolerant real-time processing system covering ingestion, stream processing, storage, serving, monitoring, and recovery.

data pipelineInfrastructureStream Processing

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What Happens When You Load a WebpageMedium

Evaluates your understanding of the web request lifecycle and core infrastructure components.

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Streaming Feature Pipeline for RankingHard

Tests your ability to build production-grade streaming features for real-time ranking.

Stream ProcessingETLData Modeling

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