FULL_TIME

Principal Security Software Engineer

11/22/2025

Lead efforts to design, implement, and support AI-driven adversary emulation tooling. Partner with internal defensive security teams to improve their detection, investigation, and response capabilities.

Working Hours

40 hours/week

Company Size

10,001+ employees

Language

English

Visa Sponsorship

About The Company

Every company has a mission. What's ours? To empower every person and every organization to achieve more. We believe technology can and should be a force for good and that meaningful innovation contributes to a brighter world in the future and today. Our culture doesn’t just encourage curiosity; it embraces it. Each day we make progress together by showing up as our authentic selves. We show up with a learn-it-all mentality. We show up cheering on others, knowing their success doesn't diminish our own. We show up every day open to learning our own biases, changing our behavior, and inviting in differences. Because impact matters. Microsoft operates in 190 countries and is made up of approximately 228,000 passionate employees worldwide.

About the Role

Lead efforts to design, implement, and support AI-driven adversary emulation tooling. Support partner development teams and the open-source community in contributing to our services. Partner with internal defensive security teams to improve their detection, investigation, and response capabilities. Build relationships with peers through design and code reviews, and peer mentoring. Analyze emerging attack techniques from red teams, adversarial researchers, and external threat actors, leveraging these insights to develop and refine advanced security tooling. Embody our culture and values Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. Master's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor's Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. The ability to apply reference architecture and patterns for a variety of solutions (e.g., advanced analytics, artificial intelligence, analytics, security, etc.). Demonstrated knowledge of the engineering life-cycle that provides for task estimation, design and code review, specification review, bug triage, code check-in, sign-off, test targeting, and performance standards to meet customer and business goals 2+ years people management experience. 2+ years product ownership experience.

Key Skills

Adversary EmulationAI-Driven ToolingCC++C#JavaJavaScriptPythonSecurity ToolingDetectionInvestigationResponse CapabilitiesCode ReviewsMentoringEmerging Attack TechniquesEngineering Life-CyclePeople Management