Security represents the most critical priorities for our customers in a world awash in digital threats, regulatory scrutiny, and estate complexity. Microsoft Security aspires to make the world a safer place for all. We want to reshape security and empower every user, customer, and developer with a security cloud that protects them with end to end, simplified solutions. The Microsoft Security organization accelerates Microsoft’s mission and bold ambitions to ensure that our company and industry is securing digital technology platforms, devices, and clouds in our customers’ heterogeneous environments, as well as ensuring the security of our own internal estate. Our culture is centered on embracing a growth mindset, a theme of inspiring excellence, and encouraging teams and leaders to bring their best each day. In doing so, we create life-changing innovations that impact billions of lives around the world.

Are you passionate about building secure, intelligent systems that identify threats before adversaries do? Do you want to shape the future of security building on AI tools? Our team, IDSEC, is on a mission to scale proactive security across Microsoft’s products by unifying vulnerability identification and exploit detection. We’re building systems that combine AI, large-scale code and binary analysis, and real-time intelligence to find and mitigate security issues across the software supply chain. We are looking for a Senior Software Engineer with a strong foundation in AI and security to help design and deliver scalable systems that operate across millions of assets and billions of signals. You'll be working at the intersection of secure software engineering, advanced detection, and practical AI—enabling defenders to stay ahead of the threat curve. If you’ve ever wanted to build secure-by-design systems with the latest in machine learning, large language models, and static/dynamic analysis at cloud scale—this is your opportunity.

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.

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• Design and implement scalable backend systems that power vulnerability detection and exploit prevention across the software lifecycle.
• Apply ML/AI models (including LLMs and diffusion models) to real-world security challenges, such as exploit classification, vulnerability prediction, or false-positive reduction.
• Work closely with security researchers and ML engineers to translate research into production-grade systems.
• Contribute to the design of systems for secure model execution, model verification, and telemetry governance.
• Ensure software systems are robust, secure, and privacy-respecting—from identity/auth to logging and data handling. Drive architectural discussions, lead code reviews, and contribute to engineering strategy and team-wide standards.
• Collaborate with product teams across Microsoft to integrate security findings and scale impact. Mentor junior engineers and help shape a strong security and engineering culture.

Required:

• Proven experience as a software engineer working on distributed systems or cloud services.
• Proficiency in a modern programming language (e.g., C#, Python, Go, or Rust).
• Experience working with large-scale data processing pipelines or AI/ML inference systems.
• Strong understanding of security fundamentals, including secure coding practices, authentication/authorization, and vulnerability classes (e.g., memory corruption, IDOR, SSRF).
• Demonstrated ability to deliver secure, high-quality code in a fast-paced environment.

Other Requirements:

Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include, but are not limited to the following specialized security screenings: Microsoft Cloud Background Check: This position will be required to pass the Microsoft background and Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Qualifications Other:

• Experience applying AI to code (e.g., code understanding, analysis, or generation).
• Background in ML model evaluation, interpretability, or adversarial robustness.
• Experience with Azure or other cloud platforms.
• Familiarity with modern CI/CD pipelines, secure software supply chain, and SBOM tooling.
• Experience in building or scaling systems for vulnerability management, security automation, or detection engineering.

This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.

Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.