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CyberSecurity, Offensive Security Engineer

Mistral AIParisSolutions
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Salary
Not listed
Job type
Full-time
Posted
9 Jul 2026
Status
Open · checked 7d ago

About this role

Role Overview

Mistral AI is seeking a skilled professional for the CyberSecurity, Offensive Security Engineer position located in Paris. This full-time role suits an experienced security expert with a strong attacker mindset who wants to secure innovative agentic AI systems and products.

Key Responsibilities

Proactively hunt for vulnerabilities across agentic applications, cloud infrastructure, and foundational models using realistic attack vectors.
Design and execute red and purple team exercises to stress-test defenses and improve detection capabilities.
Collaborate with defensive teams to turn offensive insights into concrete improvements for detection engineering and incident response.
Perform thorough penetration testing on the product suite, which includes AI-driven workflows, custom infrastructure, and user-facing interfaces.
Build and automate offensive tooling to scale impact and stay ahead of emerging threats.
Communicate security findings clearly to both technical and non-technical stakeholders to prioritize mitigations.
Shape the overall security strategy by contributing attacker-informed perspectives to threat modeling, risk assessment, and architectural decisions.

Requirements

Bring seven or more years of offensive security experience, or equivalent expertise demonstrated through exceptional achievements.
Possess deep knowledge of AI and machine learning security risks, including prompt injection, data leakage, model manipulation, and dynamic UI abuses.
Hands-on experience assessing modern technology stacks such as custom Kubernetes deployments, containerized environments, cloud-native architectures (AWS, GCP, Azure), CI/CD pipelines, and GitHub security best practices.
Familiarity with macOS and Linux internals, as well as Python and React-based applications and data science toolchains.
Demonstrate a builder’s mindset with the ability to write robust tools, automate workflows, and contribute to defensive solutions.
Exhibit strong intuition for trust boundaries, risk assessment, and outstanding communication and collaboration skills.

Nice to Have

Background in AI, data science, or related fields with an understanding of the intersection between security, model behavior, and system design.
Previous experience working in high-growth startups or research-driven organizations.
Expertise in adjacent disciplines such as software engineering, detection engineering, site reliability engineering, or security architecture.

Skills and Tools

Python
AWS, GCP, and Azure
Kubernetes
React
CI/CD pipelines and GitHub security practices
macOS and Linux internals

About the Company

Mistral AI delivers full-stack AI solutions ranging from frontier models to developer tools, applications, and compute. The enterprise partners with organizations across high-stakes industries like finance, manufacturing, defense, healthcare, and the public sector to co-create customized AI systems. With a dynamic and collaborative team distributed across Europe, North America, Asia, and the Middle East, the company fosters an innovative, low-ego, and team-spirited environment.

How to Apply

Interested candidates should visit the official Mistral AI careers page to submit their application.

Skills and tech stack

PythonAWSGCPAzureKubernetesReact

Questions candidates ask

Where is the Offensive Security Engineer position located?

The position is based in Paris, France.

What level of experience is required for this role?

Candidates need 7+ years of offensive security experience, or equivalent expertise demonstrated through exceptional achievements.

What specific technical skills and tools are mentioned in the requirements?

Required technology stacks and tools include Python, React, AWS, GCP, Azure, Kubernetes, CI/CD pipelines, GitHub security practices, and macOS/Linux internals.

What are the core duties of the Offensive Security Engineer?

Duties include hunting for vulnerabilities in agentic apps and models, executing red and purple team exercises, conducting penetration testing, building automated offensive tooling, and contributing to threat modeling.

How should I apply for this job?

You should apply directly on the official Mistral AI company careers page.

Ready to apply?

The application is on the official Mistral AI careers page.

Apply on company site