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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CodingStart here. 5 questions · ~45 min

Recursive Subset SumHard

Practice

Determine whether any subset of an array sums to a target using recursion only.

RecursionArraysAlgorithms

Stellar Development Foundation

Implement a Versioned MapMedium

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

Data Structures

Stellar Development Foundation

Search Sorted Array with NullsMedium

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

Searching

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Execution7 questions · ~63 min

Debugging Performance BottlenecksHard

Diagnose and prioritize performance bottlenecks in a large-scale codebase without destabilizing delivery.

performance optimizationDebuggingdelivery management

Stellar Development Foundation

Refactoring a Large CodebaseHard

Describe how you planned and executed a large refactor while balancing delivery risk, team alignment, and code quality.

refactoring

Stellar Development Foundation

Maintainability in Large ProjectsMedium

Plan strategies to keep a large project maintainable as the codebase, team, and release pace grow.

strategiesautomated testingcode maintainability

Stellar Development Foundation

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System Design5 questions · ~45 min

Peer-to-Peer Blockchain NetworkingHard

Design a peer-to-peer networking layer for a blockchain application with low latency, high reliability, and adversarial peers.

Networkingdistributed systemsdata transmission

Stellar Development Foundation

High-Throughput Consensus DesignHard

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

distributed systemsconsensus

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Behavioral & Leadership4 questions · ~36 min

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