Senior AI Security Engineer: Agentic Platform Defense

EY is seeking an AI Security Engineer to own the security posture of EY's Agentic AI platform end to end. This role requires deep cloud-native security experience and expertise in AI threat models to defend against complex, multi-tenant deployments.

You will lead threat modeling, red teaming, and policy-as-code efforts, and work with architects to define agent Authority and sandboxing standards for secure execution.