Applied Scientist

About Us

Mistral provides full-stack AI solutions: from frontier models to developer tools, applications, and compute. We partner with enterprises tackling the hardest problems—across high-stakes industries like finance, manufacturing, defense, healthcare, and the public sector—co-creating customized AI systems that they can run on their terms. We are a dynamic, collaborative team passionate about AI and its potential to transform society. Our diverse workforce thrives in competitive environments and is committed to driving innovation. Our teams are distributed between Europe, North America, Asia and the Middle East. We are creative, low-ego and team-spirited.

Responsibilities

• Run pre-training, post-training and deploy state of the art models on clusters with thousands of GPUs.
• Generate and curate data for pre-training and post-training, working on evaluations and ensuring the model’s performance beats expectations.
• Develop the necessary tools and frameworks to facilitate data generation, model training, evaluation and deployment.
• Collaborate with cross-functional teams to tackle complex use cases using agents and RAG pipelines.
• Manage research projects and communications with client research teams.

Requirements

• Excellent communication skills, with the ability to explain complex technical concepts to both technical and non-technical audiences.
• Expertise with PyTorch or JAX.
• Ability to contribute to a big codebase independently with little guidance.
• Experience writing clean, readable, high-performance, fault-tolerant Python code.
• Self-driven and proactive: you take initiative and ship without needing constant direction.
• Low-ego, collaborative, and eager to learn.
• Track record of success through personal projects, professional projects, or in academia.

Nice to Have

• Hold a PhD or master’s in a relevant field (e.g., Mathematics, Physics, Machine Learning, Computer Science & Engineering), though exceptional candidates from different backgrounds are encouraged to apply.
• Research experience in areas such as agents, multi-modality, robotics, diffusion, or time-series.
• Contributions to a large codebase used by many (open source or in industry).
• Track record of publications in top academic journals or conferences.
• Passion for improving existing code by fixing typing issues, adding tests, and enhancing CI pipelines.

Benefits

We offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance. Benefits vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks.