Paris Remote (Global) Full-time

Mistral AI is hiring a Model Behavior Architect- Function Calling

Responsibilities

  • 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

Requirements

  • 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

Benefits

  • Competitive salary and equity (stock-options)
  • Health insurance
  • Transportation allowance
  • Sport allowance
  • Meal vouchers
  • Generous parental leave policy
  • Visa sponsorship

Work Arrangement

Remote (Worldwide) — France, USA, UK, Germany, Singapore

Additional Information

  • Visa sponsorship

Visa sponsorship available

Required Skills
Training
About company
Mistral AI
Mistral AI appears to be a technology company focused on artificial intelligence solutions, based in Paris.
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Job Details
Department Research
Category other
Posted a month ago