Applied Scientist Internship
Mistral AIVisit Mistral AI website
Paris-based AI company building frontier models, AI applications, developer tools, and compute infrastructure for enterprise and public-sector deployments.
Maintainer signals as of 9/23/2026
Paris, France
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
About the Role
You will develop state-of-the-art models across text, image, and speech. You will generate and curate training data, build tools for model development and deployment, collaborate on agent and retrieval use cases, and manage research projects and client communications.
Requirements
- Fluency in English
- Excellent technical and non-technical communication skills
- Expertise in PyTorch or JAX
- Python
- Ability to contribute independently to a large codebase
- Ability to write clean readable high-performance fault-tolerant code
- Track record through personal professional or academic projects
- Work authorization in France or the UK for the full internship duration
Responsibilities
- Run pre-training and post-training and deploy state-of-the-art models on large GPU clusters
- Generate and curate data for pre-training and post-training
- Evaluate models and improve their performance
- Develop tools and frameworks for data generation training evaluation and deployment
- Collaborate on complex use cases using agents and retrieval pipelines
- Manage research projects and communications with client research teams
Benefits
- Healthcare coverage
- Parental leave
- Retirement plans
- Relocation support
- Wellness programs
- Meal allowances
- Transportation allowances
- Location-specific perks