Senior Site Reliability Engineering- CTJ- Secret (Cleared Environments)

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 Senior Site Reliability Engineer, you will lead reliability improvements across multiple services or components, solving complex, cross-cutting operational problems. You are recognized as a subject matter expert in your area and lead by example through strong technical judgment, ownership, and accountability. 

You will influence service architecture, define reliability strategies, mentor other SREs, and drive meaningful reductions in incidents, toil, and operational risk—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. 

• Lead and develop a team of Site Reliability Engineer ICs, providing clear expectations, regular coaching, and career guidance across senior and principal levels. Foster a culture of accountability, learning, and inclusion.
• Own the operational health and reliability posture of Substrate services running in regulated environments, ensuring strong availability, incident readiness, and recovery practices.
• Drive change and influence across the org as you establish and drive SLOs, SLIs, and operational metrics, using data and learning loops to continuously improve reliability, diagnosability, and customer experience.
• Lead effective incident management and post-incident reviews, emphasizing systemic fixes, automation, and long-term resilience rather than short-term remediation.
• Serve as an actively engaged on-call engineer (OCE) and participate in an on-call rotation, leading incident response for Substrate services in regulated environments, providing hands-on leadership during incidents, and driving high-quality post-incident reviews that result in durable engineering improvements.
• Own reliability, resilience, and disaster recovery, including driving and coordinating DR and game day exercises, validating recovery objectives, and ensuring operational playbooks and restore procedures remain current, effective, and auditable.
• Drive engineering led operational excellence at scale, leveraging strong software engineering practices, automation, and AI assisted techniques to reduce operational toil, improve diagnosability, and raise overall service and OCE health in partnership with infrastructure and service teams.
• Partner with engineering and product teams to embed reliability, security, and compliance considerations early in service design, architecture, and deployment decisions.
• Influence technical and operational strategy beyond your immediate team, particularly for cross‑cutting reliability and compliance challenges that span multiple services or organizations.
• Represent your team’s work clearly to leadership and partners, articulating risks, trade‑offs, and progress in regulated environments with precision and credibility.
• Build strong cross-functional relationships with security, compliance, infrastructure, and operations teams to deliver durable, compliant, and auditable reliability outcomes. ‑functional relationships with security, compliance, infrastructure, and operations teams to deliver
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Required Qualifications:

• 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: 

Security Cle