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Updated weekly · Last refresh Sep 25

Tower Research Capital Software Engineer Interview Questions

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

50questions
~7htotal time
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1
System DesignStart here. 12 questions · ~96 min
Low-Latency Trade Messaging DesignHard

Tests system design skills for building fast, reliable messaging for latency-critical trade execution.

system designTower Research Capital
Raft Algorithm Edge CasesHard

Assesses distributed systems understanding and robustness in consensus implementations.

edge casesTower Research Capital
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2
Coding16 questions · ~128 min
Atomic Integers in JavaMedium

Evaluates understanding of concurrency primitives and thread-safety in Java.

javaTower Research Capital
Count Balanced Parentheses SubstringsMedium

Tests algorithmic ability to count balanced parentheses structures correctly and efficiently.

combinatoricsTower Research Capital
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3
Security & Infrastructure15 questions · ~120 min
Cache Latency by LevelMedium

Evaluates performance intuition about the memory hierarchy and latency tradeoffs.

performancecachingTower Research Capital
Deadlocks, Networking, and Task SchedulingMedium

Evaluates OS and infrastructure fundamentals across concurrency, networking, and scheduling.

NetworkingTower Research Capital
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4
Behavioral & Leadership4 questions · ~32 min
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5
More topics3 questions · ~24 min
Parse Data in Python EfficientlyMedium

Assesses data handling skills and performance-minded implementation in Python.

data parsingpythonTower Research Capital
TCP vs UDPEasy

Tests your networking fundamentals relevant to security engineering and protocol behavior.

InfrastructureTrade-offsRisk AssessmentTower Research Capital
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Optimize Slow SQL at ScaleHard
Practice
Practice drill

Optimize a PostgreSQL query that aggregates millions of Uber rides and ranks active drivers by city.

database optimizationlarge datasetsperformanceUber
Debug and Optimize SQLHard
Practice
Practice drill

Debug and optimize a PostgreSQL aggregation over millions of invoice and line-item records.

database optimizationJoinsperformanceIntuit
Optimizing Slow JSON ProcessingMedium
Practice
Practice drill

Extract and aggregate completed JSON events efficiently while filtering batches before processing payload data.

database optimizationlarge datasetsperformanceKeystone
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.