Senior AI Security Engineer - Build Defensible AI

EY; Orlando (FL); Hybrid; USD 107,000 - 177,000; Full time

Job summary

EY is seeking a security-focused professional to lead AI system security across data, tools, and processes. You’ll work with product and engineering teams to implement reusable controls, perform adversarial testing, and drive evidence-based security patterns.

A hybrid US travel model is supported, with escalation to risk owners and production security champions. The role emphasizes hands-on security engineering, threat modeling, and pragmatic influence to balance safety with delivering value to

Qualifications

• 5+ years of relevant experience.
• Substantial experience in product, application, cloud, platform, or detection security, including hands-on ownership of production controls.
• Threat modeling: ability to assess complex systems and turn attack paths into practical engineering measures.
• Production security: securing modern applications, cloud environments, identities, data, and delivery pipelines.
• AI systems knowledge: understanding of generative and agentic AI, including retrieval, model access, and runtime behavior.
• Hands-on automation: building or extending security tests, telemetry, reference implementations, or adversarial assessments.
• Response experience: supporting vulnerability or incident response and translating lessons into stronger technical controls.
• Cross-functional delivery: partnering with engineers and risk functions to improve security while maintaining user value.

Responsibilities

• Set the security direction with reusable AI security patterns and threat models.
• Collaborate with product and engineering teams to embed controls early in design.
• Design practical patterns for identity, access, isolation, approvals, and recovery.
• Embed security across the data lifecycle ensuring confidentiality and integrity.
• Integrate automated security tests, policy gates, and trusted artifacts into pipelines.
• Lead red-team exercises and convert findings into repeatable tests and patterns.
• Develop runtime protection with evidence and behavioral signals for abnormal actions.
• Support vulnerability triage and incidents with clear evidence and recovery actions.
• Advise on residual risk with concise technical recommendations to risk owners.
• Build reusable security capabilities and coach engineers to adopt safer patterns.

Skills

Security engineering depth

AI threat judgment

Control engineering

Adversarial mindset

Automation capability

Pragmatic influence

Education

Bachelor’s Degree in a relevant field

Job description

EY is seeking a security-focused professional to lead AI system security across data, tools, and processes. You’ll work with product and engineering teams to implement reusable controls, perform adversarial testing, and drive evidence-based security patterns.

A hybrid US travel model is supported, with escalation to risk owners and production security champions. The role emphasizes hands-on security engineering, threat modeling, and pragmatic influence to balance safety with delivering value to