Principal Software Engineer

Principal Software Engineer - Full Stack

The Applied Sciences Group (ASG) is looking for a generalist who will help us create innovative features across Windows and other Microsoft products. A highly experienced full-stack individual contributor who will code for the majority of the time, ranging all the way from the OS to app level and service integrations.

ASG is a unique, nimble, multidisciplinary team that turns cutting-edge ideas into shipping products by composing research, incubation, rapid prototyping, and human-centered development. As part of ASG, you'll directly shape experiences used by billions of people — from Windows (running on over a billion devices) to Microsoft 365 (used by 70% of Fortune 500 enterprises) and beyond.

Some of our favorite work includes:

• Semantic Index, a high-performance vector store for operating systems, integral to Windows Recall and improved Windows Search.
• Voice experiences for Copilot on Windows.
• Microsoft Journal, an AI-powered inking app designed for pen and touch.

You'll be joining a team of highly experienced software developers working on exciting, machine learning-powered features in Windows, Copilot, and standalone products. Our focus evolves often, so you'll need to be comfortable diving into a wide variety of projects across the tech stack.

If you’re curious about how things work, passionate about innovation, and driven to ship magical experiences at the intersection of cutting-edge machine learning, software engineering, and user experience — ASG is the place for you.

In alignment with our Microsoft values, we are committed to cultivating an inclusive work environment for all employees to positively impact our culture every day.

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.