Senior Security Engineer, Platforms & AI

About the Role

We're looking for a hands-on Senior Security Engineer to own the technical security posture of our platform, infrastructure, and AI-driven systems. You'll spend most of your time in the systems themselves: hardening infrastructure, closing vulnerabilities, and building the guardrails that keep our AI-driven workflows safe.

Following our recent Series A, we're scaling rapidly and investing deeply in platform security, AI safety, and operational resilience. This is a builder's role, not a policy role. You'll work closely with Engineering to secure production systems, find weaknesses, and keep our monitoring and incident response sharp as we scale.

As a remote-first company, we welcome applicants based anywhere in the United States or Canada.

You'll join a high-ownership, high-trust engineering culture where self-starters thrive and autonomy is the natural state of work.

Key Responsibilities

Security Engineering & System Hardening

* Secure and harden cloud infrastructure, applications, APIs, internal systems, and operational workflows. * Implement and maintain security controls across production environments, CI/CD pipelines, cloud infrastructure, and internal tooling. * Work directly with engineering teams to remediate vulnerabilities and improve secure development practices. * Ensure encryption, secrets management, logging, monitoring, and access controls are properly implemented and continuously maintained. * Design and improve security architecture across cloud-native and distributed systems. * Build scalable security processes that integrate directly into engineering and operational workflows.

Vulnerability Management & Offensive Security

* Continuously identify, assess, prioritize, and remediate security vulnerabilities across infrastructure, applications, APIs, and operational systems. * Proactively search for weaknesses through vulnerability scanning, penetration