Applied Scientist Cybersecurity
Paris-based AI company building frontier models, AI applications, developer tools, and compute infrastructure for enterprise and public-sector deployments.
About Mistral AI
Mistral AI develops open-weight and commercial language models and provides a full-stack AI platform spanning agents, application development, custom-model training, APIs, and AI cloud infrastructure.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will develop, pre-train, and post-train domain-specialized security models. You will create benchmarks, sandboxed execution environments, reinforcement-learning tasks, verifiers, and training-data pipelines. You will build tools for model training, evaluation, and deployment, while managing technical delivery and customer research communications.
Requirements
- Fluency in English
- Experience building harnesses, benchmarks, or reinforcement-learning environments for code, agentic, or security tasks
- Security background in vulnerability research, exploit development, red teaming, or detection and incident response
- Ability to contribute independently to a large codebase
- Python programming
- Track record through personal projects, professional projects, or academia
Responsibilities
- Develop, pre-train, and post-train domain-specialized foundation models for defensive security
- Design security evaluations and benchmarks
- Build sandboxed execution environments, reinforcement-learning tasks, and verifiers
- Generate and curate training data
- Develop tools and frameworks for data generation, training, evaluation, and deployment
- Own technical delivery across project sprints
- Manage research communications with customer teams
Benefits
- Healthcare coverage
- Parental leave
- Retirement plans
- Relocation support
- Wellness programs
- Meal allowances
- Transportation allowances
- Location-specific perks