Senior Software Security Engineer

About this role

Senior Security Software Engineer

📍 San Francisco, CA (On-Site)

We're partnering with a rapidly growing AI infrastructure startup that is redefining how enterprises automate complex operational workflows. Backed by some of Silicon Valley's leading investors and AI pioneers, the company has built a platform that transforms highly technical business processes into natural-language-driven software, enabling Fortune 500 organizations to automate mission-critical operations at scale.

With hundreds of thousands of production workflows executed across regulated industries including financial services, insurance, and telecommunications, they're tackling some of the most challenging security problems in modern AI infrastructure. The team is lean, highly technical, and operates entirely in-person from San Francisco.

The Opportunity

As the company's first dedicated Security Engineer, you'll have the rare opportunity to build and own the security function from the ground up. This is a highly impactful role for a hands-on builder who enjoys creating security solutions that enable engineering velocity rather than restrict it.

You'll work closely with a team of senior platform engineers to secure a multi-tenant AI platform processing sensitive enterprise data while establishing the security foundations required to support continued growth and enterprise adoption.

What You'll Do

• Own the company's security program end-to-end, spanning application security, infrastructure security, information security, and compliance
• Build security tooling and automation that makes secure-by-default development the easiest path for engineers
• Secure large-scale AI infrastructure, including tenant isolation, secrets management, network segmentation, cloud environments, and regulated data pipelines
• Lead threat modeling, secure code reviews, vulnerability management, and security architecture initiatives across the platform
• Drive compliance programs including SOC 2 and PCI, servin...