Applied AI Systems Engineer — Production-Ready GenAI

Mistral.ai; Paris (TX); On-site; USD 130,000 - 190,000; Full time

Benefits offered by this job

Healthcare coverage

Parental leave

Relocation support

Retirement plans

Wellness programs

Meal and transportation allowances

Job summary

Mistral.ai is seeking a Forward Software Engineer to build the systems behind challenging AI projects, joining our Applied AI team to ship production-grade agentic/GenAI software that powers customer engagements.

You will design agent architectures, work across backend and frontend, and collaborate with researchers and customer-facing teams to deliver reliable, scalable AI solutions. Strong production depth and autonomous problem solving are essential.

Qualifications

• 5+ years building production software with at least one agentic or GenAI system shipped to production.
• Proficient in NodeJS (NextJS/Express/Fastify) or Python (FastAPI); TypeScript + React/NextJS.
• Hands-on depth in agent design: orchestration, tool use, retrieval, evaluation, and failure modes.
• Autonomous: you own the problem, approach, and outcome.
• Fluent in English; can communicate with technical and non-technical audiences.
• Able to ship in increments; time-to-value is a priority.
• Product judgment: learn user needs through customer-facing teams and scope discipline.

Responsibilities

• Build AI systems end-to-end from prototype to production.
• Design the agent architecture: orchestration, tool use, memory, retrieval, and interfaces.
• Build across the stack: backend services, APIs, and user interfaces for agents.
• Turn successful patterns into scalable platforms across multiple customers.
• Ensure systems perform under real load: throughput, latency, cost, failure recovery.
• Incorporate security into agents: permissions, sandboxing, prompt-injection defenses, audit trails.
• Develop evaluation loops: task-level evals, tracing, and drift checks.
• Collaborate with researchers, engineers and customer-facing teams to solve hard problems.

Skills

5+ years production software

NodeJS/NextJS/Express/Fastify

Python/FastAPI

TypeScript/React/NextJS

agent design depth

autonomous work style

clear communication

time-to-value focus

product judgment

Tools

Docker

Kubernetes

Terraform

AWS

GCP

Azure

Job description

Mistral.ai is seeking a Forward Software Engineer to build the systems behind challenging AI projects, joining our Applied AI team to ship production-grade agentic/GenAI software that powers customer engagements.

You will design agent architectures, work across backend and frontend, and collaborate with researchers and customer-facing teams to deliver reliable, scalable AI solutions. Strong production depth and autonomous problem solving are essential.