Applied Scientist II, Alexa for Shopping Science UK

Position Overview

We are looking for a passionate, talented, and inventive Applied Scientist with a strong machine learning background to help build industry‑leading language technology powering Alexa for Shopping, our AI‑driven search and shopping assistant. The role focuses on developing and optimizing language model‑powered (LLM/SLM) conversational experiences, with emphasis on performance, instruction design, contextual grounding, and experimentation to improve quality, robustness, and customer impact.

Our mission is to help customers find and discover the best products at every step of their shopping journey by leveraging advanced analytics, NLP, ML, A/B testing, causal inference, and data‑driven insights.

Responsibilities

• Develop and maintain LLM agents, including automated evaluation pipelines, LLM‑as‑a‑judge methodologies, rubric design, and dataset curation to measure nuanced aspects of response quality.
• Partner with th...