Horizon3 AI

Federal Sales Engineer supporting DoW customers by demonstrating and positioning Horizon3’s cybersecurity products, developing solutions, and translating customer needs into technical value. The role is remote, based in the Washington, DC region, requires up to 50% travel, and offers a $230k–$270k annual compensation range on a 70/30 split.

Build and operate the production infrastructure that turns AI research into reliable defensive agents running across thousands of customer environments. This senior role spans ML pipelines, model serving, evaluation, releases, monitoring, and cost- and latency-conscious product integration.

Build the distributed backend platform that powers Horizon3’s defensive agents across thousands of customer tenants. You’ll own agent execution, orchestration, connectors, safe-change workflows, tenant isolation, ETL, and observability for production cybersecurity systems.

Lead the technical direction and hands-on development of NodeZero’s defensive agent platform, turning proven attack paths into continuous, secure remediation. This Staff-level role combines backend engineering, agentic systems architecture, production coding, and technical leadership without direct people management.

Lead the technical direction for Horizon3’s internal-network and Active Directory attack capabilities, turning cutting-edge offensive techniques into safe, production-grade autonomous pentesting software. This remote Staff Attack Engineer role combines deep offensive security research, expert Python development, and technical leadership.

Build the next generation of Horizon3’s pentest data platform as it moves from batch processing to a real-time, event-driven architecture. You’ll own distributed backend services that transform large-scale pentest telemetry into findings, attack paths, reports, and customer insights.

Senior Backend Engineer responsible for building Horizon3’s security controls integration platform, including EDR vendor normalizers, live API pipelines, internal schemas, and integration health monitoring. The role combines backend product development with platform scale, reliability, and data-processing work.

Join Horizon3.ai as a Senior Back-End Software Engineer building technology for the NodeZero autonomous cybersecurity platform. The role offers remote or hybrid work, equity, comprehensive benefits, and an annual base salary of $187,000–$208,000.