TikTok USDS JV Interview Questions
The questions to prepare for TikTok USDS JV interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
Define a success metric for a new feature that captures real user value, not just raw usage.
Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.
Design a high-throughput RAG pipeline that grounds answers, detects unsupported claims, and balances quality, latency, and cost.
Describe your approach to managing a major production outage, restoring service, and running a disciplined RCA afterward.
Design an LLM serving architecture that balances throughput, latency, batching, memory use, and reliability.
Calculate each Hinge user's 30-day rolling average of daily interactions using CTEs and window functions.
Parse access logs, count failed requests by IP, and return the top 10 using aggregation and deterministic sorting.
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Return the first row for each unique value, then rank the k most frequent values.
EverlawCalculate a three-day moving average of active-client revenue using aggregation and SQL window functions.