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Scalable Capital Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 14 questions · ~134 min
Concurrent Hash Map InternalsMedium

Explain how a concurrent hash map coordinates reads, writes, resizing, and contention under multithreaded access.

Hash TablesjavaconcurrencyScalable Capital
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2
System Design12 questions · ~115 min
Currency Conversion System DesignHard

Design a low-latency currency conversion API with reliable rate selection, caching, and anomaly detection.

latencycurrency conversionapi designScalable Capital
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3
Execution5 questions · ~48 min
CI/CD Deploy to Many ServersHard

Design a CI/CD deployment that delivers the correct immutable artifact consistently to ten servers.

configuration managementCI/CDdeploymentScalable Capital
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4
Security & Infrastructure6 questions · ~57 min
How Single Sign-On WorksMedium

Assesses your knowledge of authentication flows and identity integration concepts.

authenticationScalable Capital
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5
Pipelines3 questions · ~29 min
Lambda vs Fargate TradeoffsMedium

Tests your ability to compare AWS compute options for production workloads.

InfrastructureTrade-offsawsScalable Capital
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6
Technical Fundamentals3 questions · ~29 min
Optimistic vs Pessimistic LockingMedium

Tests concurrency control knowledge and decision-making for trading systems.

Decision MakingTrade-offsconcurrencyScalable Capital
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7
More topics7 questions · ~67 min
Load CSVs Into PandasEasy
Practice

Read and verify CSV-imported records with a PostgreSQL SELECT ordered by record ID.

data loadingdata preparationpandasScalable Capital
Choosing Locking for Order UpdatesMedium

Tests your ability to select appropriate locking strategy based on contention and correctness needs.

Trade-offsconcurrencyScalable Capital
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
SQL Analysis on JSON DataMedium
Practice
Practice drill

Extract document data from JSONB, aggregate completed documents by source, and identify data needed for deeper analysis.

data managementsqlAggregationsScalable Capital
Diagnose Onboarding Funnel LeaksMedium
Practice
Practice drill

Use joins and conditional aggregations to identify daily onboarding funnel leaks by partner bank.

Funnel AnalysisDate FunctionsJoinsScalable Capital
The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.