Principal ML Scientist – Ranking & Retrieval

Tripadvisor LLC in London, United Kingdom is seeking a Principal Machine Learning Scientist to lead the core discovery engine for ranking, retrieval, and recommendations. You will define the ML strategy, build scalable systems, and mentor a high-performing team across machine learning, MLOps, and experimentation.

You will drive multi-task models, graph-aware representations, and agentic AI approaches to improve user search, discovery, and itineraries at scale within the Trips vertical.

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