Senior Attack Engineer, External at horizon3aihorizon3ai · US, Remote

Workplace: Remote, Hybrid, On-site

Type: fulltime

Posted: 2026-10-19

Skills: Python, AWSGet to Know Us Horizon3 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 Senior Attack Engineer to drive key workstreams within our external attack capabilities in NodeZero, our autonomous pentesting platform. For most organizations, the external attack surface is where a breach begins. Customers need NodeZero to find the forgotten host, exposed credential, or misconfigured service, and prove how far each weakness leads. The surface is large and messy. It spans domains, certificates, cloud assets, code repositories, leaked data, identities, SaaS tenants, and the relationships connecting all of it. Much of it is unstructured, inconsistent, and hard to reason about in code. Attackers are also getting faster at finding and chaining these weaknesses together. This is a high-impact role. You'll independently develop complex workst…Sign in to see the original postingBrowse more developer jobs on RoleBurst