Senior AI Security Engineer - Build Safe AI Systems

EY; Las Vegas (NV); Hybrid; USD 107,000 - 177,000; Full time

Benefits offered by this job

Medical & dental

401(k)

Paid time off

Job summary

EY is seeking a security leader to embed AI security across product, cloud, and data platforms in a hybrid US-based role. You will shape controls, run red-team exercises, and translate findings into scalable patterns that teams can reuse.

The role emphasizes practical risk reduction, collaboration with product and engineering, and building reusable security capabilities across EY's Challenger program. Requires 5+ years in security, strong threat modeling, and hands-on automation; travel up to

Qualifications

• 5+ years of relevant experience.
• Bachelor’s Degree in a relevant field.
• Substantial experience in product, application, cloud, platform, or detection security, including hands-on ownership of production controls.
• Threat modeling: assess complex systems and turn attack paths into practical engineering measures.
• Production security: securing modern applications, cloud environments, identities, data, and software delivery pipelines.
• AI systems knowledge: working understanding of generative and agentic AI, including retrieval, model access, tool use, evaluation, and runtime behavior.
• Hands-on automation: building or extending security tests, controls, telemetry, 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 respecting user value and delivery constraints.
• Travel and On-site requirements: up to 50% travel and flexible hybrid office presence.

Responsibilities

• Set the security direction. Own reusable AI security patterns, control objectives, reference architectures, and threat models aligned to the risk and autonomy of each use case.
• Join builders early. Work with teams before key design choices are fixed, identifying credible attack paths and shaping controls that fit the product and delivery model.
• Design scoped authority. Create practical patterns for identity, access, isolation, approvals, and recovery so tool-using AI acts within clear and enforceable boundaries.
• Protect sensitive information. Embed security across the data lifecycle, preserving confidentiality, integrity, provenance, permitted use, and monitored access.
• Secure the delivery path. Integrate automated security tests, policy gates, trusted artifacts, traceable changes, and safe rollback into engineering workflows.
• Test adversarially. Run focused red-team exercises against AI-specific abuse cases and convert findings into repeatable tests, stronger platform patterns, and actionable guidance.
• Build runtime protection. Use end-to-end evidence and behavioral signals to detect abnormal actions, privilege misuse, attempted exfiltration, and degrading controls.
• Strengthen response. Support vulnerability triage and incidents with clear evidence, containment options, recovery actions, and lessons that improve future designs.
• Advise on residual risk. Give product, security, evaluation, and risk leaders concise technical recommendations while keeping approval and risk‑acceptance decisions with accountable owners.
• Build shared capability. Create reference implementations, coach engineers, and turn production lessons into reusable controls that make the safer path easier to adopt.

Skills

Security engineering

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 leader to embed AI security across product, cloud, and data platforms in a hybrid US-based role. You will shape controls, run red-team exercises, and translate findings into scalable patterns that teams can reuse.

The role emphasizes practical risk reduction, collaboration with product and engineering, and building reusable security capabilities across EY's Challenger program. Requires 5+ years in security, strong threat modeling, and hands-on automation; travel up to