Microsoft Security is seeking a Senior Machine Learning Engineer to join their AI Personalization, Feedback, and Analytics team working on Security Copilot, Microsoft's GenAI platform. This role focuses on building AI-driven personalization engines, developing feedback loop systems, and delivering user analytics for security solutions. The position offers the opportunity to work with cutting-edge AI technology while contributing to Microsoft's mission of making the world safer through advanced security solutions. The team's culture embraces a growth mindset and excellence, working on innovations that impact billions of lives. The role involves collaborating with cross-functional teams, developing ML models for personalization, and analyzing large-scale user interaction data to enhance AI-driven experiences. With competitive compensation and comprehensive benefits, this position offers both technical challenges and meaningful impact in the cybersecurity space. The role supports up to 100% remote work with some travel requirements (0-25%), providing flexibility while maintaining collaborative opportunities with world-class engineering teams.