Principal Software Engineer

Overview Microsoft 365 is the world’s leading productivity service, trusted by hundreds of millions of users worldwide. Microsoft 365 Core Platform is at the center of it all, providing the secure, compliant, and intelligent foundations that connect enterprise knowledge and actions across email, documents, messaging, and business applications. The Connectors team is building the trusted integration layer that enables Microsoft 365 and Copilot experiences to reason over and act on enterprise data wherever it resides. Our portfolio includes first-party Graph Connectors (1P GC), which bring high-value Microsoft and enterprise content into Microsoft Graph and Microsoft 365 experiences, and first-party Copilot/Federated Copilot Connectors (FCC), which provide governed, reliable, and extensible access to external systems for grounding and agentic workflows. We are looking for a Principal Software Engineer to provide deep technical leadership for this strategically important area. You will help define the architecture and engineering direction for connectors that expand the reach and value of Microsoft 365 Copilot, accelerate onboarding of critical data sources, and establish a consistent control plane for connector development, quality, security, compliance, observability, and lifecycle management. This role is ideal for an innovative, hands-on engineer who can move across organizational boundaries, operate effectively in a co-development model, and turn ambiguous opportunities into durable platform capabilities with measurable customer and business impact. Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.