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Mistral AI

AI Scientist - Paris, London, Palo Alto (Internship, Master's students)

On site

London, United kingdom

Internship

16-01-2026

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Skills

Creativity Python Data Analysis Version Control Research Architecture Linux Machine Learning PyTorch TensorFlow Deep Learning Programming git Autonomy Shell Recruitment Artificial Intelligence Natural Language Processing

Job Specifications

About Mistral

At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life.

We democratize AI through high-performance, optimized, open-source and cutting-edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise needs, whether on-premises or in cloud environments. Our offerings include le Chat, the AI assistant for life and work.

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 France, USA, UK, Germany and Singapore. We are creative, low-ego and team-spirited.

Join us to be part of a pioneering company shaping the future of AI. Together, we can make a meaningful impact. See more about our culture on https://mistral.ai/careers.

Role Summary

You will be working on fine tuning LLMs on making state-of-the-art generative models
You will run autonomous work streams under the supervision of experienced scientists
The role is based in Paris or Palo Alto
Internship duration : 6 months. We are only considering candidates looking for end of studies internships
We are totally open to CIFRE programs as a continuation after the internship

What you will do

Explore state-of-the-art LLM algorithms for fine tuning LLMs, with the supervision of top level scientists
Assist in the design and implementation of machine learning models and algorithms
Conduct research on the latest advancements in natural language processing and LLMs
Contribute to the development and optimization of our LLM systems
Collaborate with cross-functional teams to integrate LLM technologies into various applications
Perform data analysis and visualization to support research and development efforts
Document research findings and contribute to technical reports and publications
Participate in team meetings and brainstorming sessions to share ideas and insights

About You

Currently a Master's from tier 1 engineering schools / Universities. We will prioritise candidates who are about to finalize their Master
High scientific understanding of the field of generative AI
Broad knowledge of the field of AI, and specific knowledge or interest in fine-tuning and using language models for applications
Strong programming skills in Python, with experience in libraries such as TensorFlow, PyTorch, or similar
Familiarity with natural language processing techniques and machine learning algorithms
Design complex software and make them usable in production
Navigate the full MLOps technical stack, with a focus on architecture development and model evaluation and usage
Previous experience with LLMs or related technologies
Knowledge of deep learning frameworks and techniques..Experience with version control systems (e.g., Git) and linux shell environment

Now, it would be ideal if you :

Have experience in fine tuning LLMs
Have used complex HPC infrastructure with full autonomy

Benefits

Competitive salary

Food : Daily lunch vouchers

Sport : Monthly contribution to a Gympass subscription

Transportation : Monthly contribution to a mobility pass

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

About the Company

Frontier AI. In your hands. We believe in a future where AI is abundant and accessible. We aspire to empower the world to build with—and benefit from—the most significant technology of our time. Join us: https://jobs.lever.co/mistral/ Know more