CyberSecurity, Offensive Security Engineer

Senior–Lead Paris, France Full-time Posted 2 months ago

Skills & stack

Languages

Python

Tools & Infra

AWS Azure CI/CD GCP Kubernetes Linux

Skills

Penetration Testing Red Teaming

About the role

Mistral AI is hiring a CyberSecurity, Offensive Security Engineer at Senior to Lead level in Paris, France. The position connects offensive security with AI safety to help safeguard agentic systems.

Work format

This is a full-time position.

Skills and tools

Penetration Testing
Red Teaming
Kubernetes
AWS
GCP
Azure
CI/CD
Python
Linux

What to prepare

Prepare a walkthrough of an offensive assessment, covering findings and the defensive changes they informed.
Select a Python tooling sample that demonstrates your approach to automating offensive security work.
Prepare an explanation of prompt injection or data leakage risks and how you would test them.

Responsibilities

Identify vulnerabilities in agentic applications, cloud infrastructure and foundational models.
Design and run red and purple team exercises that simulate adversarial scenarios.
Conduct penetration tests across Mistral AI's product suite.
Build offensive security tools and automate their operation.
Turn findings from offensive testing into actionable defensive improvements.
Contribute to threat modeling and architectural security decisions.

Requirements

Bring 7+ years of offensive security experience or equivalent demonstrated expertise.
Demonstrate expertise in penetration testing, red teaming and AI/ML risks, including prompt injection and data leakage.
Have hands-on experience with Kubernetes, AWS, GCP, Azure and CI/CD pipelines.
Work with macOS/Linux environments and Python/React applications, with the ability to build tools and contribute to codebases.
Communicate security findings and collaborate on defensive improvements.

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Mistral AI

Product

Paris-headquartered AI company building open-weight and commercial large language models and an enterprise AI platform (Le Chat, La Plateforme). Incorporated in Paris, 900+ employees, with science, pr

Location: Paris, France
Team size: 501-1000
Remote policy: Hybrid

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