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Updated weekly · Last refresh Sep 24

Stellar Development Foundation Software Engineer Interview Questions

The questions to prepare for a Stellar Development Foundation Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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~3htotal time
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1
CodingStart here. 6 questions · ~50 min
Implement a Versioned MapMedium

Evaluates your design and implementation skills for data structures that support historical versions.

Data StructuresStellar Development Foundation
Search Sorted Array with NullsMedium

Tests your algorithmic thinking for edge cases and correctness under non-ideal input data.

SearchingStellar Development Foundation
Coding Challenge RelevanceMedium

Assesses how you translate real team problems into efficient, correct coding solutions.

coding challengeStellar Development Foundation
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2
System Design5 questions · ~41 min
Peer-to-Peer Blockchain NetworkingHard

Tests system design skills for P2P networking, including discovery, gossip, and reliability.

NetworkingStellar Development Foundation
High-Throughput Consensus DesignHard

Tests system design ability for consensus under high load, including reliability and throughput trade-offs.

distributed systemsconsensusStellar Development Foundation
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3
Execution7 questions · ~58 min
Debugging Performance BottlenecksMedium

Evaluates troubleshooting methodology using profiling, instrumentation, and systematic hypothesis testing.

performance optimizationDebuggingStellar Development Foundation
Refactoring a Large CodebaseMedium

Evaluates planning, risk management, and execution quality during large-scale refactoring efforts.

refactoringStellar Development Foundation
Maintainability in Large ProjectsMedium

Assesses ability to manage complexity through architecture, testing, documentation, and coding standards.

strategiescode maintainabilityStellar Development Foundation
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4
Behavioral & Leadership4 questions · ~33 min
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The finish line: interview-readyComplete all 22 questions to finish this plan.