Platform AI Engineer - Production-Grade, Full-Stack

Mistral; Paris; On-site; EUR 70,000 - 100,000; Full time

Job summary

Mistral is seeking an Applied AI Engineer to lead design and delivery of production-grade AI systems, translating complex business needs into scalable solutions across departments. You will be the technical lead and an individual contributor, shaping architecture, adoption, and ROI for AI-enabled workflows.

Work spans from discovery with department heads to end-to-end development of full-stack apps (Python/FastAPI, React) with observable data and reusable components.

Qualifications

• At least 3 years building and deploying production AI software.
• Strong full-stack engineer: Python/TypeScript, scalable backends (FastAPI/Node), and enough frontend (React/Vue) to ship a usable app yourself.
• Hands-on with modern GenAI use cases: RAG, agents, workflows, orchestration and evaluation.
• Strong command of vibe-coding tools, paired with genuine care for clean code and architecture: speed without slop.
• Strong ownership and a bias for delivery. This is made for high-velocity engineers who already have experience.
• Fluent in AI-native tools (Slack, Linear, etc.).
• Excellent communication in fluent English: you can explain a technical idea to a lawyer, a marketer and a staff engineer in the same afternoon.

Responsibilities

• Run discovery with department heads and key users, map their workflows, and turn ambiguous needs into a prioritized use-case backlog with clear expected value.
• Deliver end to end: design and ship production-grade full-stack apps (Python/FastAPI, React) and AI systems, from scoping through deployment and adoption.
• Encode business rules, KPIs and ROI metrics as durable datalake assets and app logic, so your departments run on trustworthy, observable data.
• Dogfood the latest Mistral products as a first internal user, and turn what you learn into credible product feedback that shapes the roadmap.
• Own architecture for your surface: keep it scalable, secure and observable, with a high bar on clean code.
• Spot patterns across departments and lift one-off solutions into reusable building blocks.

Skills

Python

TypeScript

Full-stack

GenAI

RAG

Orchestration

Communication

Tools

FastAPI

Node

React

Vue

Job description

Mistral is seeking an Applied AI Engineer to lead design and delivery of production-grade AI systems, translating complex business needs into scalable solutions across departments. You will be the technical lead and an individual contributor, shaping architecture, adoption, and ROI for AI-enabled workflows.

Work spans from discovery with department heads to end-to-end development of full-stack apps (Python/FastAPI, React) with observable data and reusable components.