New 
Principal Software Engineering Manager - M365 Copilot App
 Microsoft | |
 United States, California, Mountain View | |
 Oct 26, 2025 | |
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OverviewAI is transforming productivity in profound ways. As the new home of Office productivity, the M365 Copilot App (M3CA) is at the forefront of this transformation. It is one of the fastest growing products at Microsoft, and the primary means through which most M365 users experience the power of Copilot - be it Chat, Search, or Agents. M3CA is a multi-platform product, built for consumer-grade experiences and enterprise-grade trust. Our team is responsible for all aspects of engineering for this ecosystem of applications and services. As a Principal Software Engineering Manager - M365 Copilot App, you will lead a team to develop and improve the Copilot application across Windows, Mac, and Web platforms. You will work through Engineering Managers to lead architectural decisions and help your team make sound technical choices to build applications, balancing innovation with platform stability. You will work closely with your Engineering Managers and Product counterparts to take ideas through design, implementation, validation, and release. You will plan investments for your organization, assign work to teams, and help them manage execution of projects. You will help foster a fast paced, collaborative environment to design, prototype, implement, and ship features. You will partner across multiple product and platform teams in Microsoft and define reusable architectural patterns and techniques that enable consistent and intelligent user experiences at scale. You will mentor engineers and foster a culture of technical capabilities in architecture, performance profiling, and cross-platform design systems. You will attract and hire top engineering talent. You will provide engineering leadership to the team taking on technical issues inherent in building and delivering a consumer-grade application that powers cross-platform AI experiences.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.
ResponsibilitiesGuides partnership with appropriate stakeholders (e.g., project manager, technical lead) to determine user requirements within and across teams.Guides teams and leads identification of dependencies and the development of design documents for a product, application, service, or platform.Optimizes, debugs, refactors, and reuses code to improve performance and maintainability, effectiveness, and return on investment.Guides team to drive multiple group's project plans, release plans, and work items in coordination with appropriate stakeholders.Guides team and monitors other engineers across product lines, working on-call to monitor system/product/service for degradation, downtime, or interruptions.Oversees product development and ensures products are scaled according to customer requirements, implementing appropriate techniques to address scaling and performance objectives. Embody our culture and values. | |