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Candescent Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 5 questions · ~47 min
2
Execution5 questions · ~47 min
3
Machine Learning4 questions · ~38 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffCandescent
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4
System Design5 questions · ~47 min
Design an LLM Serving PlatformHard

Design an LLM serving system that balances latency, cost, scalability, and safety for production traffic.

Cold StartFeature StoreModel ServingCandescent
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5
SQL & Data Manipulation5 questions + 3 drills · ~77 min
6
Generative AI & LLMs4 questions · ~38 min
Reduce Hallucinations in LLM AnswersEasy

Explain LLM hallucination and give three practical ways to reduce it using grounding, prompting, and evaluation.

HallucinationPrompt EngineeringRAGCandescent
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7
More topics22 questions · ~207 min
Month-End Close ProcessHard

Explain a controlled month-end close, including reconciliations, accruals, variance analysis, review, and GAAP financial statement completion.

Accounting FundamentalsFinancial Statementsfinancial processesCandescent
Improve Underperforming Model AccuracyMedium

Approach for diagnosing an underperforming model and improving accuracy through error analysis, feature work, tuning, and bias variance tradeoffs.

Cross-ValidationAccuracyThreshold TuningCandescent
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.