About the Job
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 assess...
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, c...
Job Title: Senior Offensive Security Consultant (Red Team / Penetration Tester)
Key Responsibilities
Lead full-scope penetration testing and red team engagements from scoping through final reporting.
Perform in-depth testing of internal networks, web applications, APIs, cloud environments, and external attack surfaces.
Identify and safely demonstrate business-logic flaws, edge cases, and high-impact attack chains that automated tools often miss.
Review and validate findings from automated platforms, reproducing issues manually where needed.
Deliver high-quality, client-ready reports with clear risk ratings, business impact, and practical remediation guidance.
Collaborate with sales, customer success, and engineering teams to translate findings into product improvements.
Mentor junior consultants and contribute to methodology, tooling, and process enhancements.
Support compliance-driven assessments while maintaining an offensive security mindset.
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.
Required Skills & Abilities
We’re looking for a Senior Offensive Security Consultant with deep, hands-on experience leading end-to-end penetration testing and red team engagements. In this role, you’ll assess real customer production environments — including internal networks, web applications, and cloud infrastructure — to uncover vulnerabilities, validate attack paths, and deliver clear, actionable risk insights.
You will primarily lead remote engagements (1–2 weeks in duration) that include both pure red team exercises and compliance-focused testing (PCI DSS, SOC 2, etc.). You’ll combine strong technical tradecraft with excellent communication skills to help customers understand and address their security risks.
5–10 years of current, hands-on experience in offensive security, red teaming, or penetration testing.
Strong background in web application penetration testing and internal network assessments.
Experience with compliance-focused engagements (PCI DSS, SOC 2, etc.).
U.S. Citizen (required).
Excellent written and verbal communication skills, including the ability to explain complex technical issues to both technical and executive audiences.
You should be highly proficient with modern offensive security tooling, including:
Burp Suite Professional (essential — Repeater, Intruder, Scanner, Extensions, and advanced workflows)
OWASP ZAP
Postman / API testing tools
SQLMap, NoSQLMap, GraphQL tools
CrackMapExec
BloodHound / SharpHound
Impacket suite
Responder, NTLMRelayX
Metasploit Framework
Pacu, Scout Suite, Prowler
AzureHound, RoadRecon
Cobalt Strike / Sliver / Covenant (C2 frameworks)
Nmap, Masscan
John the Ripper / Hashcat
Custom scripting (Python, PowerShell, Bash)
Strong experience writing professional security reports
Passion for the craft of penetration testing and finding what automation misses.
Experience with AI-assisted testing or agentic workflows.
Published research, blog posts, or community contributions.
Relevant certifications (OSCP, OSCE, CRTP, OSEP, GXPN, etc.).
