Mistral
Model Behaviour Architect- Multilingual
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Model Behaviour Architect- Multilingual
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 built to meet enterprise as well as personal needs. Our offerings include Le Chat, La Plateforme, Mistral Code, and Mistral Compute—a suite that delivers frontier intelligence to end-users.
We’re 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 across France, USA, UK, Germany, and Singapore. We’re creative, low-ego, and team-spirited.
Join us to shape the future of AI. For more about our culture, visit https://mistral.ai/careers.
About This Role
As a Model Behaviour Architect in the Multilingual team, you’ll define and measure what constitutes excellent model behaviour across languages—beyond just English.
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We’re looking for engineers, machine learning specialists, and large language model experts who can excel in model evaluation, policy creation, and elaborate evaluation pipelines for complex scenarios. Your role will be to partner with our Science team to establish what “good” means in multilingual contexts—language accuracy, naturalness, cultural relevance, and consistent performance across all languages where our models are deployed.
Join if you’re eager to tackle cutting-edge, open-ended research challenges and translate your insights into best-in-class models that empower users across diverse languages and cultures.
Your Responsibilities
- Inspect models across multiple languages to pinpoint opportunities for improving multilingual behaviour
- Collect internal and external feedback to identify areas for improvement
- Define benchmarks for high-quality behaviour tailored to each language
- Design and implement evaluation methodologies, data guidelines, synthetic test environments, and multilingual policy frameworks
- Ensure that models aligned with cultural context, regional values, and user expectations
- Detect and resolve edge-case behaviours through rigorous cross-language testing
- Develop robust evaluation pipelines for new model candidates
- Collaborate closely with AI Scientists
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What We’re Looking For
You’re the ideal candidate if you meet these criteria:
- A proven track record of building and verifying high-stakes evaluative frameworks
- Deep expertise in one or more of these areas: linguistics, multilingual NLP, or LLMs, especially reasoning and tool use (preference for linguistics or multilingual NLP)
- Thrives in dynamic, technically complex environments with high ambiguity
- A history of innovating to overcome real-world operational constraints
Benefits
- ✅ Competitive salary & equity
- 🍽️ Daily food vouchers: €71.20 per week (€10.83/day) + 50% employer contribution
- 🎾 Discounted gym access via EGYM Wellpass
- 🚌 Mobility subsidies (yearly support for public transit)
- 🏥 Comprehensive health insurance for you and family
- 🌱 Generous parental leave policies
- 🌍 Visa sponsorship for international talents
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