Data Annotation Quality Specialist

Mistral.ai; Paris; On-site; EUR 42,000 - 62,000; Full time

Benefits offered by this job

Healthcare coverage

Parental leave

Retirement plans

Relocation support

Wellness programs

Meal and transportation allowances

Job summary

Mistral.ai in France seeks a Data Quality Specialist to ensure high-quality human annotations for AI models. You will create and audit annotations, collaborate with the technical team to refine guidelines and tools.

Ideal candidates have STEM education, strong English writing, and excellent analytical skills. You will work in a dynamic, global team and handle repetitive tasks with precision.

Qualifications

• STEM or related degree required or equivalent experience.
• Strong written and spoken English.
• Analytical and research-focused mindset for data quality.
• Excellent communication and organizational skills.
• Ability to adapt to changing requirements and work in a fast-paced setting.
• Willingness to perform operational data tasks and learn new tools.
• Experience with data, multilinguals, or coding familiarity is a plus.

Responsibilities

• Create high-quality data annotations following guidelines and feedback.
• Review and audit annotations to clarify requirements and improve processes.
• Collaborate with the technical team to improve tools and guidelines.
• Apply research and analytical skills to ensure data accuracy and consistency.
• Exercise sound judgment with complex instructions or limited data.
• Adapt to dynamic environments and evolving requirements.
• Contribute to operational workflows with tolerance for repetitive tasks.

Skills

Data quality

Annotation

English proficiency

Research skills

Communication

Adaptability

Multilingual

Education

STEM degree

Tools

Annotation tools

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 a Data Quality Specialist on the Human Data Annotation team, you will ensure the highest standards of quality and efficiency in human data annotations. This role exists to support the development and evaluation of AI models by creating and auditing annotations that meet rigorous guidelines. You will work closely with the technical team to refine annotation processes, tools, and guidelines, directly contributing to the accuracy and reliability of our models. Your attention to detail and analytical skills will help maintain the integrity of the data that powers Mistral’s AI systems.

What You Will Do

• Create high-quality data annotations based on guidelines and continuous feedback.

• Review and audit annotations to clarify requirements and improve annotation processes.

• Collaborate with the technical team to share insights that enhance tools and guidelines.

• Apply strong research and analytical skills to ensure data accuracy and consistency.

• Exercise sound judgment when working with complex instructions, limited data, or multiple information sources.

• Adapt to dynamic environments and evolving requirements to maintain high standards.

• Contribute to operational workflows with a high tolerance for repetitive tasks.

What We're Looking For

• Relevant academic background in science, technology, engineering, or mathematics.

• Professional proficiency in English, with strong writing and comprehension skills.

• Outstanding research and analytical abilities to ensure data quality.

• Excellent communication, interpersonal, and organizational skills.

• Ability to adapt easily to changing requirements and dynamic environments.

• Willingness to engage in operational work and learn new tools and technologies.

• Experience with data, fluency in multiple languages, or familiarity with code is a plus.

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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