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Fuku Interview Questions

The questions to prepare for Fuku interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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~6htotal time
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1
CodingStart here. 5 questions · ~46 min
2
Execution4 questions · ~37 min
Migrate Monolith to MicroservicesHard

Plan a zero-downtime migration from a legacy monolith to microservices while managing risk, sequencing, and stakeholder pressure.

Trade-offsRoadmappingRisk AssessmentFuku
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3
Pipelines8 questions · ~74 min
Build Idempotent Payment API PipelineEasy

Design an idempotent payment API and ETL pipeline that prevents duplicate charges during retries while publishing exactly-once payment events downstream.

InfrastructureIdempotencyQualityFuku
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4
Generative AI & LLMs3 questions · ~28 min
Debugging Unexpected LLM OutputMedium

Tests your debugging approach for LLM behavior, root-cause analysis, and corrective actions.

DebuggingllmFuku
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5
System Design6 questions · ~56 min
LLM Feedback Loop DesignMedium

Tests your ability to design iterative improvement loops using human feedback for production LLM code assistance.

feedback loopFuku
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6
Behavioral & Leadership10 questions · ~93 min
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7
More topics5 questions · ~46 min
When to Switch to Fine-TuningMedium

Tests your ability to make data-driven decisions about when fine-tuning is worth the cost.

Decision MakingPrompt EngineeringFine-TuningFuku
Evaluating AI Feature SuccessMedium

Tests your ability to define measurable outcomes and evaluation plans for AI features in production.

feature evaluationsuccess metricsFuku
Vector Search Embeddings ExperienceMedium

Tests your practical knowledge of embeddings and vector search for retrieval and ranking.

Vector SearchexperienceFuku
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