Offensive Security Engineer, Horizon3.ai NodeZero

Foresite Cybersecurity

Offensive Security Engineer managing proactive security services on Horizon3.ai NodeZero platform. Leading vulnerability management, testing execution, and strategic advisory for clients' security posture improvements.

Posted 7/9/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in penetration testing methodologies and the MITRE ATT&CK framework, with a strong ability to translate complex technical vulnerabilities into actionable remediation strategies for diverse client environments. Proficient in managing the Horizon3.ai NodeZero platform and conducting strategic security assessments to enhance client security postures.

Highest-signal resume keywords

Penetration Testing MethodologiesHorizon3.ai NodeZero ManagementMITRE ATT&CK FrameworkEnterprise NetworkingCloud Architecture (AWS, Azure, GCP)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Penetration TestingVulnerability AnalysisRisk AssessmentNetwork SecurityCloud Security

Soft Skills

CommunicationStakeholder EngagementAnalytical Thinking

Tools & Technologies

Horizon3.ai NodeZeroVLANsFirewallsRouting

Certifications & Qualifications

Horizon3.ai NodeZero Certified ProfessionalCertified Ethical Hacker (CEH)CompTIA PenTest+Offensive Security Certified Professional (OSCP)

Industry Keywords

CybersecurityMSSPSOCOffensive Security ConsultingZero-Day Threats

Tech Stack

Tools & technologies

AWSAzureCloudCyber SecurityFirewallsGoogle Cloud Platform

About the role

Key responsibilities & impact

Partner closely with internal Blue Teams, SOC Analysts, and client IT leaders to identify vulnerabilities, map attack paths, and validate remediations.
Configure, deploy, and manage the Horizon3.ai NodeZero platform across diverse multi-tenant client environments, covering internal, external, cloud, and hybrid infrastructures.
Schedule and execute continuous or on-demand autonomous penetration tests based on client risk profiles, compliance mandates, or zero-day threats.
Analyze complex NodeZero testing outputs to differentiate between theoretical vulnerabilities and actual, exploitable attack vectors.
Translate highly technical attack data into clear, risk-prioritized remediation strategies for client IT and security leaders.
Conduct strategic Quarterly Business Reviews (QBRs) to visually demonstrate client security posture improvements and measurable security outcomes over time.

Requirements

What you’ll need

3–5 years of experience in cybersecurity, with at least 2 years working within an MSSP, SOC, or offensive security consulting team.
Deep understanding of penetration testing methodologies, the MITRE ATT&CK framework, and common network/cloud lateral movement techniques.
Proven hands-on experience with Horizon3.ai NodeZero (certification or accreditation under the Horizon3.ai Vanguard Partner Program is a major plus).
Strong grasp of enterprise networking (VLANs, firewalls, routing) and hybrid cloud architectures (AWS, Azure, GCP).
Exceptional ability to explain complex technical vulnerabilities and exploit chains to non-technical executive stakeholders.
Bachelor’s degree or equivalent practical experience.
Preferred Certifications: Horizon3.ai NodeZero Certified Professional / Administrator, CEH (Certified Ethical Hacker), CompTIA PenTest+, or OSCP (Offensive Security Certified Professional).

Benefits

Comp & perks

Comprehensive Health & Wellness: Robust medical insurance options to keep you and your family healthy.
Employer-Covered Insurance: We fully provide employer-paid Dental coverage, as well as Short-Term (STD) and Long-Term Disability (LTD).
Generous Time Off: We believe in a true work-life balance. You’ll start with 3 weeks of paid vacation, plus additional sick leave and paid company holidays.
Growth & Mentorship: Access to world-class training. We support your career trajectory, whether you’re looking to deepen your technical skills or move into leadership.
Impactful Work: Help protect global clients using the latest AI-enhanced security tools and GCP native technologies.