Principal Group Engineering Manager

As a Principal Engineering Manager on the GitHub Developer Experience (DX) team, you will lead a team responsible for foundational systems and services that power GitHub's internal engineering and development workflows. DX focuses on improving how GitHub engineering teams build, test, and ship software across the company—operating at significant scale and complexity. Our work spans CI/CD platforms, developer tooling, virtualized infrastructure, and the paved paths that enable teams to move quickly while maintaining reliability and security. We provide the tooling, services, and operational support that allow engineers to deliver changes to production safely and efficiently. This includes running highly available, company-wide CI platforms; partnering closely with application and platform teams to improve reliability and performance; and continuously reducing friction in the developer workflow. The team plays a critical role in maintaining trust in GitHub's build and test infrastructure while balancing speed, scale, and stability. GitHub's continued growth brings both opportunity and complexity. As a Principal Engineering Manager in this role, you will lead a team operating mission-critical systems in a fast-moving environment. You'll work closely with engineers across the company to improve CI reliability, reduce test flakiness, respond to incidents, and evolve our platforms to meet the needs of a rapidly scaling organization. This role blends people leadership, technical depth, and operational ownership, with a direct impact on the daily experience of GitHub engineers and the quality of the products used by millions of developers worldwide.