# Staff Attack Engineer, Internal/AD at Horizon3.ai

- Company: Horizon3.ai
- What the company does: 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.
- Company website: https://horizon3.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: US, Remote
- Work setup: Remote
- Pay: $247K to $275K base salary per year (USD)
- Posted: 2026-09-01
- Apply by: 2026-10-16
- Apply: https://jobs.ashbyhq.com/horizon3ai/c0802b07-3cfb-4a9e-b0da-c41751b4b095
- Page: https://www.1752.vc/careers/jobs/horizon3-ai-staff-attack-engineer-internal-ad/

## About the role

We're looking for a Staff Attack Engineer to be the technical lead for internal network and Active Directory attack capabilities in NodeZero, our autonomous pentesting platform.

## What they're looking for

- Deep, hands-on offensive experience against Active Directory and internal enterprise networks, from initial foothold through domain and enterprise compromise
- Command of current AD tradecraft: credential access, Kerberos attacks, NTLM coercion and relay, AD Certificate Services abuse, ACL and GPO abuse, and lateral movement and persistence
- Demonstrated experience attacking modern, hardened environments (NTLM deprecation and enforced signing, Kerberos-only, tiered administration)
- Strong software engineering fundamentals with expert-level Python, and a track record of shipping and maintaining production-quality code, not just scripts and proofs of concept
- Ability to independently research unfamiliar systems and technologies and rapidly become the team's expert
- A track record of technical leadership: setting direction, driving high-complexity and high-risk work, and mentoring other engineers

Tags: Engineering