Principal Site Reliability Engineer- CTJ- Secret

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.

• 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.

• Doctorate Degree in Computer Science, Information Technology, or related field AND 2+ years technical experience in software engineering, network engineering, or systems administration
  • OR Master's Degree in Computer Science, Information Technology, or related field AND 3+ years technical experience in software engineering, network engineering, or systems administration 
  • OR Bachelor's Degree in Computer Science, Information Technology, or related field AND 5+ years technical experience in software engineering, network engineering, or systems administration 
  • OR equivalent experience.

Other Requirements:

Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings:

• Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.

• Security Clearance Requirements: Candidates must be able to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include, but are not limited to the following specialized security screenings:

  The successful candidate must have an active U.S. Government Secret Security Clearance. Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. Failure to maintain or obtain the appropriate clearance and/or customer screening requirements may result in employment action up to and including termination.

  Clearance Verification: This position requires successful verification of the stated security clearance to meet federal government customer requirements. You will be asked to provide clearance verification information prior to an offer of employment.

  Citizenship & Citizenship Verification: This position requires verification of U.S. citizenship due to citizenship-based legal restrictions. Specifically, this position supports United States federal, state, and/or local United States government agency customer and is subject to certain citizenship-based restrictions where required or permitted by applicable law. To meet this legal requirement, citizenship will be verified via a valid passport, or other approved documents, or verified US government Clearance

Preferred Qualifications: