Principal Software Engineer

Microsoft's Windows Endpoint Security Platform engineering team is seeking a Principal Engineer to spearhead the development of next-generation security framework for industry-wide partners. This is a high-visibility role within Microsoft's Core OS division, focusing on modernizing the endpoint security ecosystem. The position offers an opportunity to work on critical security infrastructure that powers Azure, Microsoft's Linux OS, Windows Client, Xbox, and Windows Server ecosystem.

The role involves designing and implementing a new user-mode platform for endpoint security solutions that must be performant, reliable, and capable of countering present and future enterprise threats. This initiative has executive-level and industry-level visibility, making it a strategic position within Microsoft.

As a Principal Engineer, you'll be working in Core OS, which supports cloud businesses and billions of customers worldwide. The role requires expertise in systems software excellence and platform architecture, with a focus on delivering high-quality, high-efficiency operating systems and platform components.

The position offers competitive compensation ranging from $137,600 to $267,000 per year (higher in SF and NYC areas), along with comprehensive benefits including healthcare, educational resources, and parental leave. The work environment is hybrid, with up to 50% work from home opportunity, and requires minimal travel (0-25%).

This is an ideal opportunity for an experienced engineer passionate about security architecture, system design, and leading complex technical initiatives. The role combines technical excellence with leadership responsibilities, requiring both deep technical expertise and strong collaborative skills to work effectively across Microsoft's diverse teams and partner organizations.