Principal Software Engineer - Microsoft 365 Copilot

Microsoft Corporation

Multiple Locations, Multiple Locations

Job posting number: #7319140 (Ref:ms-1899060)

Posted: October 24, 2025

Job Description

Microsoft 365 Copilot is a groundbreaking productivity tool that leverages the power of large language models, user data, Microsoft Graph, and the web to drive unparalleled creativity and productivity. At the heart of this innovation is the Microsoft Search, Assistant, and Intelligence (MSAI) team which designs and manages the central infrastructure that is the foundation of all the other copilots like Microsoft 365 Chat, Word, PowerPoint, and an expanding list 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. We combine deep technical work with product-facing impact. We are proud of our collaborative culture and our track record of delivering results at scale. We are looking for a Principal Software Engineer to help us deliver the next generation of capabilities for the platform.


As a Principal Software Engineer, you will be responsible for designing, developing, and delivering innovative software applications. You will work on coding, debugging, testing, and troubleshooting throughout the application development process. You will have the opportunity to work on challenging projects, collaborate with talented colleagues, and shape the future of technology at our company.
In this role, you will be expected to have a deep understanding of software development principles and be able to apply them to create high-quality software. You will work closely with other team members and partners to ensure that our software meets the needs of our platform users and is delivered on time and within budget.
You will have the opportunity to grow your skills and take on new challenges within the company. Join us and help us build the next generation of software applications.
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.





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Job posting number:#7319140 (Ref:ms-1899060)
Application Deadline:Open Until Filled
Employer Location:Microsoft Corporation
Redmond,Washington
United States
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