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Senior Security Engineer and Principal Security Engineer (Services)

Microsoft· Penetration Testing
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Hybrid (United States)$119.8k - $234.7kFull-timePosted 3w ago

About the role

Security-focused engineering role within Microsoft Windows Security, performing offensive security, security engineering, and mitigations for online services. Hands-on role involving security reviews, threat modeling, and collaboration with product teams to design durable protections for Windows online presence.

Responsibilities

  • Lead and participate in security reviews to identify and mitigate risk in Microsoft services, including design review, code reviews, and penetration testing.
  • Build reusable agents and tools to expedite and improve the consistency and quality of security reviews.
  • Review deployments and code for security defects and architectural risk using agents and automated tools built by you and others.
  • Safely demonstrate the real-world impact of security flaws to aid in prioritization and fix validation.
  • Be the security contact for teams building new innovative products and services that will be deployed and used by billions.
  • Apply an adversary mindset to creatively bypass security controls.
  • Leverage a broad and current understanding of security to devise new protections.
  • Collaborate with engineering teams to improve security and articulate the value of security investments.

Qualifications

  • 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.

Skills

Required:Security reviewsPenetration testingTooling developmentSecurity communication
Nice to have:Proof-of-concept mitigations

Benefits

  • This section was not explicitly enumerated in the provided job description beyond standard company-wide statements.
Last updated Oct 1, 2026. Interested? Apply on the company site.

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