Security Engineer: Build Trustworthy, Secure AI Platforms

Sierra is seeking a Security Engineer to help build the foundations that keep our AI platform secure by default. You’ll design and ship systems across product security, infrastructure security, identity, and detection, partnering with product and platform teams to reduce risk and protect customer data.

You’ll own cross-cutting security initiatives, model designs, review architectures, and automate security workflows in CI/CD, enabling scalable defenses while balancing usability and performance.