Microsoft Substrate is the foundational cloud platform that powers many of Microsoft’s most critical services including Exchange Online and M365 Copilot, providing shared infrastructure, identity, messaging, storage, and service-to-service capabilities used across Microsoft 365 and related cloud offerings. Substrate services operate at global scale and are designed to deliver high availability, reliability, and security for some of the world’s most demanding workloads.
As a Principal Site Reliability Engineer, you will set technical and operational direction for reliability across Substrate workloads. You operate at broad scope, influencing architecture, reliability strategy, and engineering practices across teams and organizations.
You are expected to lead complex, multi-year initiatives; shape how reliability is designed into systems; and act as a role model for technical excellence, leadership, and Microsoft values—particularly for services operating in regulated, sovereign, or compliance-sensitive environments.
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.
Responsibilities
Define and drive reliability strategy, SLO frameworks, and operational best practices across Substrate workloads in highly regulated environments
Serve as an actively engaged senior on-call engineer (OCE), participating in on-call rotations and leading incident response for Substrate services in regulated environments.
Provide hands-on leadership during the most complex or high-impact incidents, setting technical direction and response strategy.
Drive high-quality post-incident reviews that result in durable, systemic engineering improvements across teams.
Architect and deliver large-scale automation, observability, and self-healing solutions.
Drive architectural decisions and define software engineering standards that make reliability, security, and compliance intrinsic to Substrate services.
Influence service design and engineering decisions across organizational boundaries.
Mentor senior and principal engineers and shape the long-term technical direction of the SRE discipline.
Represent Substrate SRE perspectives with senior leadership and cross-functional partners.
Qualifications
Required Qualifications:
Other Requirements:
Site Reliability Engineering IC5 - The typical base pay range for this role across the U.S. is USD $142,800.00 - $274,800.00 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000.00 - $304,200.00 per year.
Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:
https://careers.microsoft.com/us/en/us-corporate-pay
This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.
Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.
Every company has a mission. What's ours? To empower every person and every organization to achieve more. We believe technology can and should be a force for good and that meaningful innovation contributes to a brighter world in the future and today. Our culture doesn’t just encourage curiosity; it embraces it. Each day we make progress together by showing up as our authentic selves. We show up with a learn-it-all mentality. We show up cheering on others, knowing their success doesn't diminish our own. We show up every day open to learning our own biases, changing our behavior, and inviting in differences. Because impact matters.
Microsoft operates in 190 countries and is made up of approximately 228,000 passionate employees worldwide.
