horizon3ai
67 live roles
Horizon3 is a fast‑growing cybersecurity company on a mission to help organizations proactively find, fix, and verify exploitable attack vectors before adversaries exploit them. Our flagship platform, NodeZero™, delivers production‑safe autonomous pentesting and attacker‑centric validation across internal, external, cloud, and hybrid environments. We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and cybersecurity practitioners who were tired of ineffective tools, alert fatigue, blind spots, and “checkbox security.” We operate with a culture of respect, collaboration, ownership, and results, and we’re looking for sellers who thrive in fast‑moving, high‑growth environments.
Open roles
- Backend EngineerUS, Remote · today
- Backend EngineerUS, Remote · today
- Systems EngineerUS, Remote · today
- Onboarding EngineerUS, Remote · today
- Platform EngineerUS, Remote · 5d ago
- Site Reliability EngineerUS, Remote · 5d ago
- Senior/Staff Developer Experience EngineerUS, Remote · 5d ago
- Engineering ManagerUS, Remote · 7d ago
- Engineering ManagerUS, Remote · 7d ago
- Applied AI Engineer, Autonomous DefenseUS, Remote · 12d ago
- Senior Detection Engineer (EDR), Autonomous DefenseUS, Remote · 12d ago
- Backend EngineerUS, Remote · 14d ago
- Software EngineerUS, Remote · 14d ago
- Machine Learning EngineerUS, Remote · 14d ago
- Staff Attack Engineer, Internal/ADUS, Remote · 27d ago
- Backend EngineerUS, Remote · 1mo ago
- Support EngineerAmsterdam, NL · 1mo ago
- Engineering ManagerUS, Remote · 1mo ago
- Data EngineerUS, Remote · 1mo ago
- Senior Engineer, Back-End (Security Controls)US, Remote · 1mo ago
- Support EngineerUS, Remote · 1mo ago
- Engineering ManagerUS, Remote · 1mo ago
- Senior Back End EngineerUS, Remote · 1mo ago
- Staff Attack Engineer, AI/LLMUS, Remote · 1mo ago
- Senior Attack Engineer, Offensive ToolingUS, Remote · 1mo ago
Showing 25 of 67.
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