**Overview**

We are looking for au202f **Senior Applied Scientistu202f** with deep expertise inu202fmodern retrieval technologiesu202fto help shape the future of Microsoft 365 Copilot, with a focus on Search, Chat and Agent experiences. This role sits within theu202fCopilot and Agents Core (CACore)u202forganization, which powers the intelligence behind M365 Copilot by combining cutting-edge advances in generative AI with personalized search, retrieval and recommendation systems. As a Senior Applied Scientist in CACore, you will work in an exciting and fast-paced, collaborative environment focused on building state-of-the-art retrieval systems that serve millions of enterprise users daily.

You will partner closely with engineering, product and platform teams to innovate, design and evaluate retrieval and ranking technologies that improve grounding quality, relevance, personalization and reasoning capabilities across Microsoft 365 Copilot experiences. This is a high-impac...