Principal Software Engineer - AI Experiences, Copilot

About the role

Microsoft AI Experiences is seeking experienced Product Engineers to help build the Copilot web experiences available on copilot.microsoft.com, Edge Browser, and Windows OS. You’ll work in a deeply iterative, collaborative, fast-paced environment to bring AI technology to millions of users worldwide while ensuring safety and reliability. This U.S.-based position is located in Mountain View, CA, and requires you to be local to the San Francisco area, working in-office four days a week. Starting January 26, 2026, employees are expected to work from a designated Microsoft office at least four days a week if they live within 50 miles (U.S.) or 25 miles (non-U.S., country-specific) of that location.

Responsibilities

• Ship delightful, AI-powered experiences that will shape how millions of people interact with AI in the future.
• Collaborate with AI researchers, product managers, and designers to bring a world-class AI companion to the world.
• Design and build efficient and reusable front-end systems that drive complex web applications.
• Plan and deploy front-end infrastructure necessary to build, test, and deploy our products.
• Join a small team of world-class product engineers with deep frontend expertise who are obsessed with building beautiful and performant products.
• Embody Microsoft’s Culture and Values.

Requirements

• Bachelor’s degree in computer science or a related technical discipline AND 4+ years of software engineering experience building web products at scale using languages including, but not limited to, TypeScript and React OR equivalent experience.

Preferred Qualifications

• Bachelor’s degree in computer science or a related technical discipline AND 10+ years of software engineering experience building web products at scale using languages including, but not limited to, TypeScript and React OR
• Master’s Degree in Computer Science or a related technical discipline AND 8+ years of software engineering experience building web products at scale using languages including, but not limited to, TypeScript and React OR equivalent experience.
• Have 0 to 1 experience with a bias toward shipping and learning while balancing a high-quality bar.
• Thrive in a fast-paced, collaborative environment and are comfortable making progress in ambiguity.
• Enjoy working closely with cross-functional partners and teammates in an inclusive, curious culture.
• Take a user-centric approach to product development, prioritizing solutions that result in the best user experience and have the technical expertise to deliver.