WestJet Interview Questions
The questions to prepare for WestJet interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Compute cosine similarity for equal-length high-dimensional vectors in one pass with constant auxiliary space.
Define a practical KPI set for product success, balancing a north star metric with leading indicators.
Design a high-throughput RAG pipeline that grounds answers, detects unsupported claims, and balances quality, latency, and cost.
Compare when to fine-tune a foundation model versus relying on prompt engineering with a managed API.
Select and justify the evaluation metrics needed to move an LLM from prototype testing to reliable production monitoring.
Design an LLM serving architecture that balances throughput, latency, batching, memory use, and reliability.
Explain why a favorite product experience works, which user need it solves, and how you would measure its success.
Build a hybrid dense and lexical retrieval system, tuning embeddings, indexing, and reranking for high recall and precision.
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