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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 UDPMedium

Explain TCP and UDP differences and select the appropriate protocol based on reliability, ordering, latency, and overhead.

InfrastructureTrade-offsExecutionTower Research Capital
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Modular Code with OOP PatternsHard
Practice
Practice drill

Identify active modules using multiple OOP patterns and list their patterns with PostgreSQL aggregation.

JoinsData ManipulationProgrammingTower Research Capital
Rank Data Structures by Trade Lookup LatencyHard
Practice
Practice drill

Compare trade lookup latency across data structures and rank choices using PostgreSQL aggregation and window functions.

database optimizationData Manipulationfinancial dataTower Research Capital
TCP vs UDP and Use CasesMedium
Practice
Practice drill

Compare TCP and UDP telemetry by reliability and latency, then recommend the better protocol per application.

NetworkingCase WhendesignVerkada
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.