Microsoft

Senior Security Engineer and Principal Security Engineer (Multiple Positions)

United States, Washington, Redmond, Multiple LocationsSenior individual contributorSecurity

Listed on Microsoft’s official careers site. Posted September 16, 2026. Check that it is still open and apply there.

Job description

Build reusable agents and tools to expedite and improve the consistency and quality of security reviews
Review features and code for security defects and architectural risk using agents and automated tools built by you and others Be the security contact for teams building new innovative products and technologies in the next version of Windows and devices Interact with the external security community and security researchers
Collaborate with product teams to improve security, and articulate the business value of security investments
Master's Degree in Statistics, Mathematics, Computer Science, or related field AND 3+ years experience in security or related field OR Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 4+ years experience in security or related field
Master's Degree in Statistics, Mathematics, Computer Science, or related field AND 4+ years experience in security or related field OR Bachelor's Degree in Statistics, Mathematics, Computer Science, or related field AND 6+ years experience in security or related field OR equivalent experience. 2+ years identifying vulnerabilities in operating systems and/or native (C/C++) applications. 5+ years of experience in a software engineering or security-related engineering.

Demonstrated experience in security research, especially around vulnerability discovery. Experience exploiting bugs and bypassing security mitigations in operating systems.