Senior AI Security Engineer: Build Safe AI Systems

EY; Hartford (CT); Hybrid; USD 107,000 - 177,000; Full time

Job summary

EY’s Challenger program seeks an experienced security leader to embed defenses across AI systems. You’ll work with product and engineering teams to make threat models practical and reusable, guiding secure design and resilient delivery.

You will help design identity, access, and data lifecycle controls while running focused red-team exercises to tighten platform patterns and provide actionable guidance. This role blends hands-on testing, threat modeling, and risk-aware engineering in a hybrid

Qualifications

• 5+ years of relevant experience in security engineering and AI reliability.
• Hands-on ownership of production controls and threat modeling.
• Experience securing modern cloud-based applications and data pipelines.

Responsibilities

• Set the security direction with reusable AI security patterns and threat models.
• Collaborate with product and engineering teams to identify attack paths early.
• Design practical patterns for identity, access, isolation, approvals, and recovery.
• Embed security across the data lifecycle and enforce controlled data usage.
• Integrate automated security tests, policy gates, and traceable changes.

Skills

Security engineering

AI threat modeling

Control engineering

Adversarial mindset

Automation capability

Pragmatic influence

Education

Bachelor’s Degree

Job description

EY’s Challenger program seeks an experienced security leader to embed defenses across AI systems. You’ll work with product and engineering teams to make threat models practical and reusable, guiding secure design and resilient delivery.

You will help design identity, access, and data lifecycle controls while running focused red-team exercises to tighten platform patterns and provide actionable guidance. This role blends hands-on testing, threat modeling, and risk-aware engineering in a hybrid