Research Staff, Adversarial Intelligence

Get to Know Us Horizon3.ai is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find, fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by IT Ops/SecOps teams, consulting pentesters, and MSSPs and MSPs. We are a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools and false positives, resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn it alls, committed to a culture of respect, collaboration, ownership, and results. An Overview We're looking for a Research Staff Member to join Horizon3 AI Research and work on research problems at the intersection of super intelligence, systems security, and agentic systems for security. You'll investigate technical problems that arise from real security environments and help turn promising research ideas into methods, prototypes, experiments, and systems that can influence Horizon3's technology. Depending on the project, this may include AI agents for security, autonomous pentesting, attack-path reasoning, cyber deception, AI safety and security, security evaluation of AI systems, or new methods for reasoning over security data and environments. This is not a purely academic research role and it is not a conventional software engineering role. We are looking for people who enjoy both understanding difficult technical problems and building systems that allow us to test those ideas in practice. You do not need to arrive as an expert in both AI and systems security. You should have strong computer science foundations and meaningful depth in at least one of these areas, along with the curiosity and motivation to develop expertise in the other. This role may be hired at the P1 (Entry) or P2 (Developing) level based on experience and demonstrated technical maturity. We expect junior researchers to receive mentorship and technical guidance as they develop greater independence. What You’ll Do - Conduct research on problems at the intersection of AI, cybersecurity, and computer systems. - Formulate research questions from real technical challenges faced by Horizon3 and its customers. - Design and run experiments that test research hypotheses in controlled and representative environments. - Build research prototypes and implement methods with sufficient quality to support meaningful evaluation. - Study and evaluate modern AI techniques, including large language models, agentic systems, reasoning methods, learning algorithms, and related approaches when relevant to the research problem. - Analyze security systems, attack paths, telemetry, graphs, configurations, and other real-world security data. - Read and critically evaluate academic and technical literature, identify relevant ideas, and determine how they apply to Horizon3's research problems. - Work closely with researchers, attack engineers, security engineers, product teams, and other technical groups to understand problems and evaluate potential solutions. - Document research methods, experiments, results, and limitations clearly and rigorously.