About StackOne:

StackOne is the AI Integration Gateway for SaaS products and AI Agents. Backed by GV and Workday Ventures ($24M raised), we help builders of SaaS platforms and AI Agents orchestrate hundreds of scalable, accurate, and enterprise-grade integrations. Our platform combines 25,000 pre-mapped actions on 200 connectors, an AI-powered integration development toolkit, plus security by design: a real‑time architecture, managed authentication and permissions, and end‑to‑end observability.

Join us on our fast trajectory to build the future of agentic integrations.

About the role

We’re looking for a Security Engineer to be a key hire on our Engineering team and own our cloud and product security posture as we scale. You’ll work across our AWS and Cloudflare estate, harden our secure SDLC, run pen testing efforts end‑to‑end, and threat‑model the features powering our connectors, OAuth flows, and agent execution paths.

It’s a ha...