Senior/Staff Attack Engineer, Rapid Response

US, Remotefull timeRemote

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senior

$230k–$275k

H1B: no

horizon3ai The Senior/Staff Attack Engineer will research and productize real-world exploitation techniques for the Rapid Response product to help customers quickly assess vulnerabilities. The role focuses on high-consequence vulnerabilities including CISA KEVs, Zero-Days, and emerging attack techniques.

Responsibilities

security teams rapidly validate exposure, prioritize remediation, and verify that defenses are working.
Research and reproduce high-consequence vulnerabilities across enterprise networks, applications, identity systems, cloud environments, and infrastructure—including CISA KEVs, CVEs, N-Days, and Zero-Days.
Study attacker tactics, techniques, procedures, and campaigns observed in the wild, including tradecraft not tied to a single CVE.
Turn vulnerability research and real-world attacker behavior into safe, repeatable proof-of-exploit capabilities, attack paths, and automated modules for Rapid Response and NodeZero.
Demonstrate realistic impact—including privilege escalation, credential access, lateral movement, persistence, and data access—without unnecessary disruption.
Validate remediation and containment by safely retesting vulnerabilities and security controls.
Improve execution speed, reliability, observability, and evidence quality while collaborating with research, product, and engineering teams.
Strong Python and software engineering skills, including experience building, testing, and operating production-quality tooling.
Solid penetration testing, vulnerability research, and exploit-development fundamentals.
Hands-on experience with enterprise networks, applications, identity systems, cloud environments, or endpoint security.
Demonstrated ability to reproduce vulnerabilities and convert manual techniques into reliable automation.
Understanding of common attack chains, trust boundaries, authentication and authorization, privilege escalation, and lateral movement.

Qualification

Experience with CISA KEVsBackground in incident responseExperience with AWSExperience with exploit developmentContributions to security researchBachelor’s Degree in Computer Science

Preferred

Experience with CISA KEVs, CVE analysis, N-Day research, Zero-Day research, or responsible disclosure.
Background in incident response, threat hunting, purple teaming, or security operations.
Experience with AWS, Azure, GCP, Kubernetes, Active Directory, Entra ID, Okta, or hybrid environments.
Experience with exploit development, reverse engineering, malware analysis, or vulnerability research.
Contributions to security research, CVEs, conference talks, open-source tools, or technical publications.
CTF experience or equivalent hands-on offensive security practice.
Bachelor’s Degree in Computer Science, Computer Engineering or related field.
OSCP (Offensive Security Certified Professional) or equivalent certifications.