AI Security Platform Lead & Threat-Model Architect

EY; McLean (VA); Remote; USD 140,000 - 210,000; Full time

Job summary

EY is seeking an AI Security Engineer to own the security posture of EY’s Agentic AI platform end to end. You’ll shape threat models, enforce cloud-native security, and defend against agentic threats across multiple deployment targets.

You'll lead defense against prompt injection, supply-chain attacks, and policy-as-code governance, partnering with architecture and risk teams to demonstrate auditable security to clients and regulators.

Qualifications

• Proven experience in cloud-native security and AI/agentic threat models.
• Ability to define threat models and perform red-teaming exercises.
• Experience with policy-as-code and governance tooling.

Responsibilities

• Own the platform threat model covering agent autonomy, tool invocation, delegated authority, and multi-tenant deployments.
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Skills

Threat modeling

Cloud-native security

AI security

Red teaming

Policy as code

Kubernetes hardening

Supply-chain security

Threat intelligence

Tools

Sigstore/Cosign

Notation

Kyverno

OPA

Job description

EY is seeking an AI Security Engineer to own the security posture of EY’s Agentic AI platform end to end. You’ll shape threat models, enforce cloud-native security, and defend against agentic threats across multiple deployment targets.

You'll lead defense against prompt injection, supply-chain attacks, and policy-as-code governance, partnering with architecture and risk teams to demonstrate auditable security to clients and regulators.