Security Engineer, Trust & AI Safety

Sierra; California (MO); On-site; USD 130,000 - 190,000; Full time

Benefits offered by this job

Unlimited PTO

Medical, dental & vision benefits

Life insurance & disability benefits

Parental leave

Job summary

Sierra is hiring for a Security Engineer to help build secure AI agent platforms and protect customer data. You’ll design and ship security-focused features across agents, infrastructure, backend and frontend, with a strong emphasis on trust and privacy.

You’ll work on runtime policy enforcement, safe sandboxing for agents, and scalable security workflows, partnering with product and platform teams to balance usability, performance and security.

Qualifications

• Experience building and maintaining production systems.
• Strong understanding of authentication/identity frameworks.
• Ability to design for least privilege and transparency.

Responsibilities

• Design and ship systems that secure Sierra’s platform by default across agents, infrastructure, backend and frontend.
• Build and enforce trust primitives: identity management, access control, auditability, data lifecycle management.
• Implement runtime policy enforcement for tool use and safe agent sandboxing.
• Create developer-friendly tooling to automate security checks in CI/CD and monitor sensitive events.

Skills

Software engineering

Security mindset

Product mindset

Curiosity and ownership

Job description

Sierra is hiring for a Security Engineer to help build secure AI agent platforms and protect customer data. You’ll design and ship security-focused features across agents, infrastructure, backend and frontend, with a strong emphasis on trust and privacy.

You’ll work on runtime policy enforcement, safe sandboxing for agents, and scalable security workflows, partnering with product and platform teams to balance usability, performance and security.