Senior AI Security Architect — Platform Threat Defense

Ernst & Young Oman; Honolulu (HI); Remote; USD 120,000 - 180,000; Full time

Job summary

EY seeks an AI Security Engineer to own the security posture of EY's Agentic AI platform end to end. The role covers threat modeling, secure-by-default contracts, sandboxing, and defenses against agentic threat classes across cloud to air-gapped environments, with progress through multiple build phases.

The ideal candidate has depth in cloud-native and platform security, AI threat models, policy-as-code, and red-teaming, able to defend engineering to executives and regulators.

Responsibilities

• Own the platform threat model: agent autonomy, tool invocation, delegated authority, model and data supply chain, multi-tenancy, across deployments.

Job description

EY seeks an AI Security Engineer to own the security posture of EY's Agentic AI platform end to end. The role covers threat modeling, secure-by-default contracts, sandboxing, and defenses against agentic threat classes across cloud to air-gapped environments, with progress through multiple build phases.

The ideal candidate has depth in cloud-native and platform security, AI threat models, policy-as-code, and red-teaming, able to defend engineering to executives and regulators.