Senior AI Security Engineer - Platform Defense

EY is seeking an AI Security Engineer to own the security posture of the Agentic AI platform end to end. The role focuses on threat modeling, architecture-level defenses, and secure-by-default configurations for agent-based systems.

You will work to ensure platform integrity across cloud-native environments and regulated client contexts. This position requires deep expertise in security engineering for AI-enabled systems, red-teaming, and policy-as-code, with the ability to defend complex