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Updated weekly · Last refresh Aug 30

Obsidian Security Software Engineer Interview Questions

The questions to prepare for a Obsidian Security Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

19questions
~3htotal time
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1
CodingStart here. 5 questions · ~40 min
Detect Session Hijacking PatternsHard

Tests your skills in log analytics and pattern detection for detecting account takeover risks.

Hash TablesStream ProcessingAlgorithmsObsidian Security
Distributed Thread-Safe Rate LimiterHard

Tests your ability to design and implement concurrency-safe, distributed throttling for high-throughput SaaS security workloads.

network requestscachingconcurrencyObsidian Security
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2
System Design3 questions · ~24 min
Near Real-Time Anomaly DetectionHard

Tests your ability to design real-time anomaly detection pipelines and operational considerations.

Feature Driftanomaly detectionObsidian Security
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3
Behavioral & Leadership6 questions · ~48 min
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4
More topics5 questions · ~40 min
API Ingestion With Rate LimitsEasy

Discuss integrating a third party API into a pipeline and handling rate limits without duplicating or losing data.

ToolsIdempotencyDependenciesObsidian Security
Optimize Large-Scale Security QueryHard

Tests your SQL performance tuning skills for large datasets in security analytics workloads.

Performance Tuningquery optimizationAggregationsObsidian Security
Transactional Consistency Across MicroservicesHard

Tests your grasp of distributed transactions, consistency tradeoffs, and microservices architecture.

distributed systemstransactionsmicroservicesObsidian Security
Multi-Tenant Data IsolationMedium

Tests your understanding of multi-tenant security controls, isolation boundaries, and safe data handling.

Trade-offsSecurityObsidian Security
Scalable Event Log Ingestion PipelineHard

Tests your system design for reliable, scalable ingestion across multiple SaaS sources and high event volumes.

data ingestionCloudObsidian Security

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
Monthly Campaign Performance SummaryEasy
Practice
Practice drill

Aggregate January 2024 campaign data by channel using GROUP BY, filtering, and ordering by total clicks.

JoinsData WranglingAggregationsDNVEversanaDiscord
The finish line: interview-readyComplete all 19 questions plus 3 hands-on drills to finish this plan.