Senior Software Engineer

As a Security Software Engineer on the Copilot Security Team, you will serve as a senior level technical leader responsible for designing, building, and governing security‑critical software systems that protect Microsoft’s agentic and autonomous AI experiences at scale.

You will operate across the full Copilot security lifecycle—threat discovery → architectural design → mitigation engineering → production integration → continuous validation—delivering durable, reusable security defenses rather than one‑off fixes. This role combines deep hands‑on engineering with system‑level security thinking, enabling the team’s mission to deliver secure‑by‑design architecture for Copilot across products and integrations.

Success in this role is measured by measurable risk reduction, improved platform resilience, and the long‑term sustainability of Copilot’s security posture—not by isolated vulnerability closures.

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.

• Design, deploy, and operate production-scale ML systems that protect Copilot experiences, ensuring high reliability, performance, and security at global scale, targeting threats such as prompt injections, adversarial inputs, and agentic workflow abuse.
• Develop adaptive detection and policy models that are capable of learning from evolving attacker behavior to offer durable protection against emerging AI security threats.
• Build and own evaluation frameworks for AI security, including adversarial testing, red teaming support, and continuous robustness measurement across real Copilot scenarios.
• Define success metrics and conduct rigorous experimentation to quantify security effectiveness, adversarial robustness, precision/recall tradeoffs, and user experience impact.
• Partner with security and engineering teams to integrate ML defenses into secure orchestration frameworks that govern agent delegation, tool calling, and action execution.
• Monitor and analyze telemetry to improve model performance, reduce false positives/negatives, and guide iterative defense improvements.
• Collaborate cross functionally with product, privacy, and AI platform teams to land agentic security patterns across Microsoft Copilot ecosystem.
• Document and share applied ML security techniques, helping establish best practices for secure agentic AI across Microsoft.
• On-call Engineering Duties.

• Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
  • OR equivalent experience.

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 Cloud background check upon hire/transfer and every two years thereafter.

Preferred Qualifications: