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Senior Backend Engineer, Autonomous Defense

Horizon3 is hiring for Senior Backend Engineer, Autonomous Defense in US, Remote. Remote, Senior level. First seen September 15, 2026; open as of November 12, 2026. Jobs taken straight from company career pages — no aggregator in between.

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Company
Horizon3
Where
US, Remote
Arrangement
Remote
Level
Senior
First seen
September 15, 2026
Listed via
Ashby

What the posting says

What You'll Do As a Senior Backend Engineer on the Autonomous Defense team, you'll build the platform that NodeZero's defensive agents run on. Our AI researchers define what these agents should reason about, you build the systems that make that work in production, across thousands of customer tenants, without breaking anything. That means real distributed systems problems, not glue code. They execute inside customer environments under tight isolation, credential, and egress constraints. And when an agent proposes a change in production, the platform has to be able to simulate it, stage it,…

Read more and apply on Horizon3's site

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