**Overview**

Microsoft 365 Copilot is a groundbreaking productivity tool that leverages large language models, user data, Microsoft Graph, and the web to drive unparalleled creativity and productivity. At the heart of this innovation is the **M365 Substrate Core Team** , which designs and manages the central infrastructure that powers Microsoft 365 Copilot experiences such as Microsoft 365 Chat, Word, PowerPoint, and an expanding ecosystem of partners across Microsoft. Our team is driving one of Microsoft’s most transformative technology efforts—bringing large language models to every customer through the Microsoft 365 suite—by combining deep technical execution with meaningful, product‑facing impact.

We are proud of our collaborative culture and our track record of delivering results at scale, and we are seeking an experienced **Principal Software Engineering Manager** to help deliver the next generation of capabilities for the platform. In this role, you will **...