Senior Software Engineer

** Overview*
* The Operating Systems and Server team within the Microsoft 365 Core Platform is responsible for improving the reliability, security, compliance, and operational health of the infrastructure that powers Microsoft 365 services worldwide.

Our team builds intelligent systems and automation that keep one of the world's largest cloud fleets secure, current, and resilient. We focus on operating system lifecycle management, firmware health, security and patch freshness, vulnerability remediation, fleet compliance, and safe deployment of critical platform updates across hyperscale infrastructure.

As a Senior Software Engineer, you will design, build, and operate large-scale distributed systems that analyze fleet telemetry, identify security and freshness risks, and drive automated remediation across Microsoft 365 infrastructure. You will work at the intersection of cloud engineering, operating systems, firmware, security, data platforms, and AI-assisted operations to improve the trustworthiness and reliability of the services millions of customers depend on every day.

You will partner closely with security teams, hardware and firmware engineering, Azure infrastructure and Fleet management teams, service owners, and site reliability engineers to deliver solutions that improve platform health, reduce operational risk, and ensure Microsoft 365 infrastructure remains secure, compliant, and up to date.

This role is ideal for engineers who enjoy solving complex infrastructure problems, working with large-scale telemetry, and building automation that improves security posture and operational excellence at cloud scale.

This position is based in Redmond, Washington and requires the employee be in the office a minimum of 3 days per week.

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*
* + Design and build large-scale distributed services that improve operating system, firmware, security, and patch freshness across Microsoft 365 infrastructure.

+ Develop telemetry, analytics, and reporting platforms that measure fleet compliance, update readiness, vulnerability exposure, firmware health, and remediation progress.

+ Build intelligent services that detect freshness gaps, identify at-risk infrastructure, prioritize remediation, and forecast fleet security or compliance risk.

+ Create safe automation workflows for operating system updates, firmware upgrades, security patch deployment, configuration enforcement, and remediation orchestration.

+ Partner with security, hardware, firmware, operating system, and infrastructure teams to define and execute data-driven strategies for improving fleet health and reducing exposure.

+ Build AI-assisted experiences that accelerate investigation of patching failures, firmware issues, configuration drift, vulnerability exposure, and live-site incidents.

+ Improve operational safety through staged rollout systems, health gates, rollback mechanisms, policy enforcement, and strong observability.

+ Participate in architecture reviews, code reviews, design discussions, and live-site operations.

+ Mentor engineers and contribute to engineering excellence across the organization.

+ Drive projects from concept and design through production deployment, measurement, and operational ownership.

** Qualifications*
* *
* Required Qualifications:

*
* + Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python

+ 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:
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