horizon3ai

Horizon3 is a remote cybersecurity company that builds the NodeZero platform, which delivers production-safe autonomous penetration tests and assessment operations across internal, external, cloud, and hybrid cloud environments. The company serves organizations of all sizes, ranging from small educational institutions to government agencies and Global 100 enterprises, as well as ITOps and SecOps teams, consulting pentesters, MSSPs, and MSPs. Its platform is designed to help organizations proactively find, fix, and verify exploitable attack vectors.

The company works in artificial intelligence and machine learning by developing autonomous agents and reasoning systems that map proven attack paths to specific control changes, such as EDR policy, firewall rules, and cloud IAM. These agents run inside customer tenants to apply fixes and verify them by re-running attacks. The engineering and research teams focus on closed-loop defense, building training pipelines, inference and serving layers, and release machinery to take defensive models into production at scale.

The open roles indicate that Horizon3 is building technical teams focused on autonomous defense and applied AI. The available positions include a Senior Machine Learning Engineer and an Applied AI Engineer. These roles are structured as United States-based and remote positions, with a focus on senior-level engineering and research capabilities required to deploy and manage AI-driven defensive models in production environments.