Principal AI Security Researcher

Microsoft Sentinel Platform NEXT R&D labs is the strategic incubation engine behind the next generation of AI-native security products. We are looking to hire a Principal AI Security Researcher who thrives in a bottoms-up, fast-paced, highly technical environment. The Sentinel Platform team will be building cloud solutions meeting scales that few companies in the industry are required to support, that leverage state-of-the-art technologies to deliver holistic protection to a planet scale user base. Our team blends scientific rigor, curiosity, and customer obsession to deliver life-changing innovations that protect millions of users and organizations by building the next generation of Artificial Intelligence (AI)-native security products. We pursue long horizon bets while landing near term impact, taking ideas from zero-to-one (0→1) prototypes to Minimum Viable Products (MVPs) and then one-to-many (1→N) platform integration across Microsoft Defender, Sentinel, Entra, Intune, and Purview. Our culture blends ambition and scientific rigor with curiosity, humility, and customer obsession; we invest in new knowledge, collaborate across worldclass scientists and engineers, and tackle the immense challenge of protecting millions of customers. As a Principal AI Security Researcher, you will be the cybersecurity expert in our product-focused applied research and development (R&D) team, which focuses in artificial intelligence and machine learning and drives innovation from concept to production. You will work on a wide range of AI/ML challenges for cybersecurity, including, but not limited to, system design, collaborating with world-class scientists and engineers to deliver robust, evaluating our AI models and system’s outputs, scalable, and responsible AI systems for security applications.