AI Scientist

Mistral AI; Warsaw (IN); On-site; USD 150,000 - 230,000; Full time

Benefits offered by this job

Healthcare coverage

Relocation support

Wellness programs

Meal and transportation allowances

Job summary

Mistral AI is seeking an AI Scientist to push the frontiers of large language models, develop scalable open models, and build tooling that makes frontier AI usable in production. You will collaborate with a global, cross-functional team across research, engineering, and product to design, train, evaluate, and deploy models that solve real-world problems in reasoning, code, and multimodal applications.

This role directly influences how AI blends into daily life and enterprise operations, with

Qualifications

• Experience building and training large transformer models.
• Proficient with modern ML frameworks and production-grade software.
• Strong collaboration across cross-functional teams.

Responsibilities

• Research and develop methods to advance frontier language models.
• Work across use cases and modalities to ship AI systems with real-world impact.
• Build tooling and infrastructure for training, evaluation, and deployment at scale.
• Collaborate with scientists, engineers and product teams across disciplines.

Skills

Python

PyTorch

JAX

Distributed systems

Kubernetes

Tools

Ray

Job description

About Mistral

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.

The Role

As an AI Scientist, you will push the boundaries of AI by developing and scaling cutting-edge models. This role exists to advance Mistral’s mission of democratizing frontier intelligence, enabling businesses and consumers to benefit from open, high-impact AI systems. You will collaborate with a global, cross-functional team to design, build, and deploy models that solve real-world problems across reasoning, code, and multimodal applications. Your work will directly shape how AI integrates into daily life and enterprise operations.

What will you do

• Research and develop novel methods to push the frontier of large language models
• Work across use cases (e.g reasoning, code, agents) and modalities (e.g text, image and speech)
• Build tooling and infrastructure to allow training, evaluation and analysis of AI models at scale
• Work cross-functionally with other scientists, engineers and product teams to ship AI systems which have a real-world impact

What we're Looking for

• You are a highly proficient software engineer in at least one programming language (Python or other, e.g. Rust, Go, Java)
• You have hands-on experience with AI frameworks (e.g. PyTorch, JAX) or distributed systems (e.g. Ray, Kubernetes)
• You have high engineering competence. This means being able to design complex software and make it usable in production
• You are a self-starter, autonomous and a team player

Now, it would be ideal if

• You have hands-on experience with training large transformer models in a distributed fashion
• You are able to navigate the full MLOps stack, for instance, fine-tuning, evaluation and deployment
• You have a strong publication record in a relevant scientific domain

Note that this is not an exhaustive or necessary list of requirements. Please consider applying if you believe you have the skills to contribute to Mistral's mission. We value profile and experience diversity.

What We Offer

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.

For the most up-to-date details on benefits available in your location, please refer to our Benefits page.

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