Senior AI Security Researcher - Red Team & LLM

VulnU; Lisboa; On-site; EUR 90,000 - 140,000; Full time

Job summary

Snyk in Lisbon is seeking a Senior Security Researcher to advance offensive security work on AI-enabled software platforms and to drive measurable improvements in risk management. You will investigate weaknesses in LLM-enabled systems, design reproducible evaluations, and build robust tooling to quantify and reduce risk across the product.

You will collaborate with engineers and security teams to translate findings into concrete remediation steps, publish insights where appropriate, and help

Qualifications

• Experience in AI red teaming and adversarial testing.
• Strong Python and software tooling skills.
• Familiarity with LLM model behavior and guardrails.

Responsibilities

• Perform security research on LLM and autonomous agents.
• Develop attack tooling and evaluation frameworks.
• Provide actionable remediation guidance.

Skills

Python

Pen testing

LLM security

Agent security

Research tooling

Tools

APIs

Containers

Browser automation

Job description

Snyk in Lisbon is seeking a Senior Security Researcher to advance offensive security work on AI-enabled software platforms and to drive measurable improvements in risk management. You will investigate weaknesses in LLM-enabled systems, design reproducible evaluations, and build robust tooling to quantify and reduce risk across the product.

You will collaborate with engineers and security teams to translate findings into concrete remediation steps, publish insights where appropriate, and help