Microsoft’s Commerce & Ecosystem (C+E) division powers one of the largest commercial platforms in the world, handling billions in revenue from Azure, Office 365, Windows, Dynamics, and more. We design and operate the financial and commerce systems that keep Microsoft running—and we’re looking for a Principal Software Engineer to help us take these systems to the next level.

In this role, you will work across teams and organizational boundaries to ensure engineering excellence at scale. You will design, build, and modernize secure, compliant, and high-performance services that drive Microsoft’s commerce and financial platforms. A key focus of the role is using AI to accelerate development, improve system reliability, and transform how we deliver solutions to our business partners and customers.