Senior Security Engineer - AI Sandbox & Cloud Security

present of AI; San Francisco (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

Cognition in San Francisco is seeking a hands-on Senior Security Engineer who writes real code in Python, Rust, or Go. You’ll lock down sandboxes running untrusted code, review designs for weaknesses, and secure cloud and Kubernetes environments while leading incident response.

The ideal candidate works across product, infrastructure, and detection, stays calm during incidents, and helps shape threat models.

Qualifications

• Hands-on security engineering with ability to write production code.
• Experience with Python, Rust, or Go.
• Strong understanding of sandboxing, isolation, and threat modeling.
• Experience securing Kubernetes and cloud environments.

Responsibilities

• Lock down sandboxes that run untrusted code.
• Review designs for weaknesses and harden systems.
• Secure cloud and Kubernetes setups.
• Lead incident response when security events occur.

Skills

Python

Rust

Go

Security engineering

Tools

Kubernetes

Job description

Cognition in San Francisco is seeking a hands-on Senior Security Engineer who writes real code in Python, Rust, or Go. You’ll lock down sandboxes running untrusted code, review designs for weaknesses, and secure cloud and Kubernetes environments while leading incident response.

The ideal candidate works across product, infrastructure, and detection, stays calm during incidents, and helps shape threat models.