Principal AI Security Engineer

EY seeks an AI Security Engineer to own the security posture of the agentic AI platform end to end, spanning from silicon-level attestation to prompt-injection defenses. The role requires deep cloud-native security expertise and hands-on work with AI threat models and defense-in-depth across the stack. You will lead security reviews for regulated deployments, drive security by design, and coordinate with clients and regulators to provide assurance artifacts that unblock deployment into sensitive