At a Glance
- Tasks: Define and measure LLMs' function calling and tool use behaviours.
- Company: Join Mistral AI, a pioneering company transforming the future of AI.
- Benefits: Competitive salary, equity, health insurance, and generous parental leave.
- Other info: Dynamic, collaborative environment with opportunities for innovation and growth.
- Why this job: Tackle cutting-edge research challenges and shape best-in-class AI models.
- Qualifications: Expertise in API design, model behaviour, and robust evaluations required.
The predicted salary is between 80000 - 100000 £ per year.
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 as well as personal needs. Our offerings include Le Chat, La Plateforme, Mistral Code and Mistral Compute - a suite that brings frontier intelligence to end-users. 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.
About the role
As a Model Behavior Architect on the Function Calling team, you are at the forefront of defining and measuring how LLMs use tools, invoke functions, and orchestrate complex agentic workflows. We are looking for people who have built a career in engineering, machine learning, and large language models and are experts in model evaluation, policy writing, and creating eval pipelines for tool use and function calling. Your role is to work hand-in-hand with our Science team to define what 'good' looks like for function calling—from accurate parameter selection and schema adherence to multi-step tool orchestration, error recovery, and agentic reasoning. Join us if you are passionate about tackling cutting-edge, open-ended research challenges and transforming your insights into best-in-class models.
What you will do
- Interact with models to identify where function calling and tool use behaviour can be improved
- Gather internal and external feedback on tool-calling behaviour to scope areas for improvement
- Design and implement evals, data guidelines, data generation, and synthetic tool environments and APIs
- Identify and fix edge case behaviours, such as malformed arguments, hallucinated functions, and incorrect tool selection—through rigorous testing
- Develop robust evaluation pipelines for the function-calling capabilities of our model candidates
- Work collaboratively with AI Scientists
About you
- You have a deep understanding of either 1) API design, structured outputs, and schema specification (e.g. JSON Schema), 2) engineering and code behavior, 3) LLM agents at work, including reasoning, planning, and multi-step tool use
- You have prior knowledge in training and optimising model behaviour
- You are an expert at building robust evaluations
- You thrive in dynamic and technically complex environments
- You have a track record of delivering innovative, out-of-the-box solutions to address real-world constraints
What we offer
- Competitive salary and equity (stock-options)
- Health insurance
- Transportation allowance
- Sport allowance
- Meal vouchers
- Generous parental leave policy
- Visa sponsorship
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Model Behavior Architect- Function Calling employer: Mistral AI
At Mistral AI, we pride ourselves on being an exceptional employer that fosters a dynamic and collaborative work culture, where innovation thrives and diverse perspectives are valued. Our commitment to employee growth is evident through competitive salaries, equity options, and comprehensive benefits including health insurance and generous parental leave. Join us in our cutting-edge environment, where your expertise in AI can make a meaningful impact on the future of technology.
StudySmarter Expert Advice🤫
We think this is how you could land Model Behavior Architect- Function Calling
✨Tip Number 1
Network like a pro! Reach out to people in the AI field, especially those at Mistral. A friendly chat can open doors that a CV just can't.
✨Tip Number 2
Show off your skills! If you’ve got projects or experiences that highlight your expertise in model evaluation or function calling, make sure to discuss them during interviews.
✨Tip Number 3
Prepare for technical challenges! Brush up on your knowledge of API design and structured outputs. Being ready to tackle real-world problems will impress the team.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining our innovative team.
We think you need these skills to ace Model Behavior Architect- Function Calling
Some tips for your application 🫡
Tailor Your Application:Make sure to customise your CV and cover letter for the Model Behavior Architect role. Highlight your experience with LLMs, API design, and evaluation pipelines. We want to see how your skills align with our mission at Mistral!
Showcase Your Passion:Let your enthusiasm for AI shine through in your application. Share any personal projects or research that demonstrate your commitment to innovation and problem-solving in the field. We love seeing candidates who are genuinely excited about what we do!
Be Clear and Concise:When writing your application, keep it straightforward and to the point. Use clear language to describe your experiences and achievements. We appreciate a well-structured application that makes it easy for us to see your qualifications.
Apply Through Our Website:Don’t forget to submit your application through our official website! This ensures that your application gets to the right place and helps us keep track of all candidates. We can’t wait to hear from you!
How to prepare for a job interview at Mistral AI
✨Know Your Models
Make sure you have a solid understanding of large language models and their functionalities. Brush up on how they interact with APIs, structured outputs, and schema specifications like JSON Schema. Being able to discuss these topics confidently will show that you're not just familiar with the theory but can apply it practically.
✨Showcase Your Problem-Solving Skills
Prepare examples from your past experiences where you've tackled complex issues, especially related to model evaluation or function calling. Highlight how you identified edge cases and implemented solutions. This will demonstrate your ability to think critically and innovate in challenging situations.
✨Collaborative Spirit is Key
Since Mistral values teamwork, be ready to discuss how you've worked collaboratively in previous roles. Share specific instances where you partnered with others to achieve a common goal, particularly in dynamic environments. This will reflect your alignment with their team-spirited culture.
✨Ask Insightful Questions
Prepare thoughtful questions about Mistral's projects, culture, and future directions. Inquire about their approach to AI challenges or how they envision the evolution of function calling. This shows your genuine interest in the role and helps you assess if it's the right fit for you.
