Principal Software Engineer – MAI Data, Privacy, and Security, Microsoft AI – Co

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<div class="isg-job-description“>OverviewAs Microsoft continues to push the boundaries of AI, we are on the lookout for passionate individuals to work with us on the most interesting and challenging AI questions of our time. Our vision is bold and broad -to build systems that have true artificial intelligenceacross agents, applications, services, and infrastructure.Security Engineering for Copilot is focused on building and securing systems that accelerate this process by making iteasy and safeto incorporate more data and functionality that would otherwise be too scary/risky to do.We are looking for a Principal Software Engineer to identify areas of risk and opportunity, then design and build solutions in Copilot, making the product and its platform more secure. This can include everything from secure coding standards, to API design, to infrastructure, sandboxing, automated testing/fuzzing, Application security, insider risk and abuse detection. Since Agential AI orchestration poses novel threats to security and privacy from information flows, misinterpretation, and exfiltration risk, you will be expected to have an understanding of these and be able to apply (or invent!) the latest research directly into the codebase to address these challenges.You will possess a methodical approach to problem-solving, proficiency in backend technologies, a familiarity with applied AI and its unique security challenges, and the ability to architect solutions that stand the test of time. Many problems in this space have not been solved before! The right candidate is hands-on and enjoys building world-class consumer experiences and products in a fast-paced environment.A key skill is the judgment to make the right risk vs velocity and value decisions.Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond. Starting January 26, 2026, Microsoft AI (MAI) employees who live within a 50- mile commute of a designated Microsoft office in the U.S. or 25-mile commute of a non-U.S., country-specific location are expected to work from the office at least four days per week. This expectation is subject to local law and may vary by jurisdiction.
ResponsibilitiesBuild secure and performant AI Platform services that power Copilot.Solve novel security and privacy problems at the frontier of applied AI and agential systems.Work collaboratively with other Platform, infrastructure, application engineers as well as AI Researchers to build next generation AI products and services.Ship high-quality, well-tested, secure, and maintainable code.Find a path to get things done despite roadblocks to get your work into the hands of users quickly and iteratively.Enjoy working in a fast-paced, design-driven, product development cycle.Embody ourCultureandValues.

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