Top 50 Cold Start Interview Questions
The most frequently asked Cold Start questions across all roles and companies, ranked by real interview frequency. Updated daily.
Design an LLM serving system that balances latency, cost, scalability, and safety for production traffic.
BrexPPSP InvestmentsAAronditeDesign a recommendation system strategy for model cold start and new-user cold start, including serving, evaluation, and safe rollout.
University of Michigan
Avnet
ProtagonistDesign a recommendation and ranking system that handles cold start for both new users and new items without hurting feed quality.
Exiger
CCC Intelligent Solutions
Fis globalDesign a personalized feed ranking system that handles new users and new content under tight latency at large scale.
ImpactCCC Intelligent Solutions
RedditDesign a marketplace recommendation system that handles new users and new items at 35M DAU with p99 latency under 150ms.
Salesforce
Meta
GraingerDesign Facebook's People You May Know recommendation system at billion-user scale with retrieval, ranking, re-ranking, and trust-aware evaluation.
MetaDesign an ML driven online banking risk scoring system that detects suspicious activity in real time while protecting sensitive financial data.
BILL
Crédit Agricole Cib
TwilioDesign an ML-based Meta API rate-limit orchestrator that protects backend services at 22M QPS while minimizing unnecessary throttling.
Walmart
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