Horizon3 uses real-world attacks to safely show what attackers can actually do in your environment—so you can fix and prove what matters. Backed by NEA.
About the role
As Director of Engineering for Webapp and AI Attack, you’ll set direction and lead the teams that turn Webapp and AI related offensive security expertise into dependable, customer-facing NodeZero capabilities. You’ll own the strategy, execution, and organizational health of this portfolio, partnering with engineering managers, technical leaders, Product, Platform, and customer-facing teams. Found on 1752vc Careers, the job board for startup and VC roles.
What they're looking for
- Familiarity with offensive security, web application penetration testing, vulnerability research, attack automation, or building security products
- Working knowledge of modern web application architecture, HTTP, authentication and session flows, APIs, browser automation, and the challenges of testing real-world applications at scale
- Familiarity with AI/LLM and agentic-system security, including trust boundaries, tool-use risks, and approaches to evaluating AI-enabled systems
- Experience with cloud software and production platforms, and fluency in at least one modern programming language such as Python, TypeScript, Go, or a comparable language
- Understanding of engineering practices such as CI/CD, automated testing, observability, incident response, and operational readiness
- Direct leadership experience across both web application security and AI/LLM security, deep expertise in one area paired with the ability to build strong technical leadership in the other is also valuable
More about this role
Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and 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 ITOps/SecOps teams, consulting pentesters, and MSSPs and MSPs.
We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, 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.
As Director of...
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