Data Annotation Quality Specialist

About Mistral

Mistral AI 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.

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 Data Quality 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

• Create high-quality data annotations, based on guidelines and continuous feedback, for the development and evaluation of AI models

• In collaboration with the technical team, review/audit annotations in order to clarify requirements and share insights that 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

By applying, you agree to our Applicant Privacy Policy.

What do we offer?

We support our employees’ well-being, growth, and work-life balance, with a range of global benefits designed to meet the diverse needs of our team members worldwide.

Health & Family

• Healthcare Coverage
  100% employer-sponsored premium plans for medical, dental, and vision care for you and your dependents.

• Parental Leave
  20 weeks of paid leave for all primary parents.

• Childcare Support
  Reserved daycare seats or financial assistance for working parents.

Financial & Career Planning

• Retirement Plans
  Competitive employer-matched contributions in applicable markets (e.g., 6% 401k match in the US, 5% pension contribution in the UK) to secure your financial future.

• Relocation Support
  Financial assistance for moving expenses, visa sponsorship, and settling-in services for you and your family.

Daily Life & Wellness

• Meal Allowances
  Monthly stipends, vouchers, or catered in-office meals, depending on your office location.

• Transportation Support
  Monthly allowances for public transport, parking, or sustainable mobility

• Fitness & Wellness
  Subsidies or memberships for gyms, wellness programs, or fitness activities

Privacy Policy

Your privacy matters to us. You can learn more about how we handle your personal data in our Applicant Privacy Policy.