The One Engineering System (1ES) team is looking for a Principal Software Engineer passionate about improving software engineering tools, increasing developer productivity, and positively affecting development culture.

Our immediate customers are Microsoft engineers, who always look to deliver better code and work faster. We develop and operate a set of engineering tools and services including build tools, languages and services, verification services including test execution and code review tools, engineering reporting and data analysis and machine learning services. All working towards a unified engineering system for internal Microsoft needs. Our services are used by tens of thousands of developers and we build and test millions of projects daily in a distributed service running at scale in multiple data centers across the world.