Principal Software Engineer, Autonomous Defense is open at Horizon3ai in US, Remote. The posting gives a salary of $255K - $300K. Posted on Sep 14, 2026, and still on Horizon3ai’s careers page when we last checked, on Nov 14, 2026.
About the role
We are hiring a Principle Software Engineer to lead the technical work for NodeZero's defensive agents: the systems that translate proven attack paths into continuous actionable remediation. You'll set direction alongside our AI researchers, who define what the agents should reason about, and lead the engineers who build the platform underneath them. This is a technical leadership role without direct people…
The opening lines of the posting. The rest is on Horizon3ai’s careers page.
Hiring at Horizon3ai
Horizon3ai has 200 open roles right now, 152 of them remote. Most are in Engineering, Sales & Business Development and Marketing & Community. The median advertised salary across its roles with a published range is $230K. See all its roles
