Annotation Specialist

Mistral

Paris permanent

Posted: December 24, 2025

Job Description

About Mistral

At Mistral we are on a mission to democratize AI, producing frontier intelligence for everyone, developed in the open, and built by engineers all over the world.

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, with teams distributed between Europe, the USA and Asia. We are creative, low-ego and team-spirited.

At Mistral, we develop models for the enterprise and for consumers, focusing on delivering systems which can really change the way in which businesses operate and which can integrate into our daily lives. All while releasing frontier models open-source, for everyone to try and benefit.

Mistral is hiring experts in the training of large language models and distributed systems. Join us to be part of a pioneering company shaping the future of AI.

Role Summary

We’re seeking highly motivated Annotation Specialists with strong analytical skills and a keen eye for detail to join our Human Data Annotation team within the Science organisation. In this role, you will contribute to and audit human data annotations, upholding the highest standards of quality and efficiency.

Key Responsibilities:
• Generate and validate high-quality data annotations, based on guidelines and continuous feedback, for the development and evaluation of AI models
• Collaborate with technical team to clarify requirements, share insights, and improve annotation processes, tools, and guidelines

About you:
• Relevant academic background (science, technology, engineering, mathematics)
• Professional proficiency in English, with strong writing and comprehension skills
• Outstanding research and analytical skills
• Exercises great judgement with complex instructions, limited data, and/or multiple information sources
• Excellent communication, interpersonal, and organizational abilities
• Adapts easily to dynamic environments and changing requirements
• Appetite for operational work and high tolerance for repetitive tasks
• Passionate about and committed to learning new tools and technologies

Nice to have :
• Proven track record working with data
• Fluency in multiple languages
• Experience with code

Benefits

France
💰 Competitive cash salary and equity
🥕 Food : Daily lunch vouchers
🥎 Sport : Monthly contribution to a Gympass subscription
🚴 Transportation : Monthly contribution to a mobility pass
🧑‍⚕️ Health : Full health insurance for you and your family
🍼 Parental : Generous parental leave policy
🌎 Visa sponsorship

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