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Updated weekly · Last refresh Aug 30

Superhuman Backend Engineer Interview Questions

The questions to prepare for a Superhuman Backend Engineer interview. Questions from real interview reports rank first. Updated weekly.

23questions
~3htotal time
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1
System DesignStart here. 7 questions · ~57 min
Ensuring Consistency in MicroservicesMedium

Evaluates consistency strategies, trade-offs, and failure handling in distributed systems.

distributed systemsdata consistencymicroservicesSuperhuman
Caching Strategies for Real-Time EmailMedium

Evaluates your understanding of caching correctness, freshness, and performance trade-offs.

Trade-offsSuperhuman
Design Kicker Tables SystemHard

Evaluates your ability to design scalable backend architecture for a specific data-driven feature.

system architectureSuperhuman
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2
Behavioral & Leadership11 questions · ~89 min
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3
More topics5 questions · ~40 min
Refactoring for ConcurrencyMedium

Tests your ability to identify concurrency bugs and refactor safely for correctness and performance.

refactoringconcurrencySuperhuman
Optimize a Latency-Critical QueryMedium

Assesses your ability to diagnose and improve database performance for user-impacting latency.

latencydatabase optimizationSuperhuman
System Design and Deep Dive InterviewMedium

Assesses your ability to communicate technical decisions clearly across system design and implementation topics.

project experiencesystem designSuperhuman
Optimize a Slow Query Impacting ServiceMedium

Tests your ability to improve query efficiency and protect service performance under load.

performancequery optimizationsqlSuperhuman
Backend Service Health MetricsMedium

Assesses your observability mindset and ability to define actionable SLO-aligned backend metrics.

monitoringSuperhuman

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Calculate 30-Day User RetentionHard
Practice
Practice drill

Use CTEs, joins, and date filtering to calculate 30-day retention by signup cohort from login and feature usage data.

Window FunctionsDate FunctionsAggregationsCurefitReachMobiIndeed
Top Models Per Asset ClassEasy
Practice
Practice drill

Rank Balyasny research models by average return within each asset class using DENSE_RANK and aggregation.

performancesqlBalyasny Asset Management
Rank Top Service CategoriesEasy
Practice
Practice drill

Use RANK() and grouped revenue to find ServiceTitan's top three service categories in each region.

RankingperformancesqlServiceTitan
The finish line: interview-readyComplete all 23 questions plus 3 hands-on drills to finish this plan.