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Principal Security Researcher (AI Security & Penetration Testing)

fenko security • New Zealand
Visa Sponsorship
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AI Summary

Fenko is hiring a Principal Security Researcher to lead penetration tests and AI security assessments for clients end to end. In this role, you will research vulnerabilities, develop repeatable testing methods, and build the tooling and automation behind Fenko's security services. You need strong offensive security experience, programming skills in Go/Python/Rust, and hands-on experience with agentic AI systems.

Key Highlights
Lead end-to-end penetration tests and AI security assessments for clients
Research vulnerabilities and translate them into repeatable testing methods and production tooling
Work directly with the founder and help shape Fenko's technical direction
Remote-first role anywhere in New Zealand with AEWV visa sponsorship available
Key Responsibilities
Lead penetration tests and security assessments end to end, including scoping, testing, verifying findings, rating risk, and reporting.
Assess client AI systems, covering prompt injection, agent and tool permissions, MCP integrations, and data exposure.
Research vulnerabilities, attack techniques, and countermeasures, and turn the results into repeatable testing and detection methods.
Build and maintain the tooling and automation behind services and products, including controls that keep automated testing within scope.
Evaluate AI models and agentic techniques for security work, and help shape how they are used.
Contribute to browser and IDE extension supply-chain research.
Set the testing standards and procedures that govern assessment work.
Investigate security incidents affecting systems or client engagements.
Advise clients on security architecture, hardening, and remediation.
Contribute technical control design and evidence to ISO 27001/42001 and SOC 2 programmes.

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Technical Skills Required
Penetration Testing Vulnerability Research AI Security Assessment
Benefits & Perks
Remote-first work anywhere in New Zealand
Flexible, async-friendly hours with few meetings
Ten days' paid sick leave from day one
KiwiSaver employer contributions on top of salary
Support for certifications such as OSCP and CRT, including study time and exam fees
Encouragement to speak at conferences and contribute to open-source security projects

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Nice to Have
Familiarity with agent security frameworks such as the OWASP Agentic Security Initiative, MITRE ATLAS, or the Linux Foundation's agent identity and verification work.
OSCP, OSWE, CRT, or an equivalent certification.
Published research, CVEs, or open-source security tooling.

Job Description

Fenko is a New Zealand AI-native security company. We deliver penetration testing through Foxhound, our AI-enabled assessment platform, and we assess and secure the AI systems our clients are building. We also score browser and IDE extension risk through RiskyPlugins, maintain the open-source passive DNS project dnsmonster, and build AI agents for clients.

About the role

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Job Overview
Posted Date Sep 29, 2026
Employment Type Full-time
Experience Level Mid-Senior level
Location New Zealand
Category Cyber Security
Company fenko security
Mentioned Skills
python rust ai oscp penetration testing owasp dns linux cloud

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