AI Engineer Product

Paris-based AI company building frontier models, AI applications, developer tools, and compute infrastructure for enterprise and public-sector deployments.

Paris, France
About Mistral AI

Mistral AI develops open-weight and commercial language models and provides a full-stack AI platform spanning agents, application development, custom-model training, APIs, and AI cloud infrastructure.

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Skills

Candidate Availability

Required and preferred rules are kept separate and reflect the wording in the original posting.

About the Role

You will design evaluations and metrics for AI-powered product features, develop prompts and orchestration, and run A/B tests. You will implement observability, operate model releases, improve core product behaviors, create evaluation templates, and diagnose regressions with Science.

Requirements

  • 3 to 4 years of experience
  • TypeScript or Python skills
  • Production LLM experience
  • Experience with evaluations and A/B testing
  • Experience implementing product code
  • Experience with logging, tracing, dashboards, and alerting

Responsibilities

  • Design evaluations for product features
  • Define and track quality, safety, latency, and cost metrics
  • Design, test, and iterate on prompts and system prompts
  • Run A/B tests and make rollout or rollback decisions from data
  • Implement logging, tracing, dashboards, and alerts for LLM calls
  • Operate model releases using canary and shadow traffic
  • Improve memory, intent classification, routing, tool-call reliability, or retrieval quality
  • Create evaluation templates and documentation
  • Diagnose regressions and lead post-mortems