New The Skills of Tomorrow: how AI-exposed is every skill in 2026? See the data →
Mistral AI

Applied AI, Use-case, Software Engineer (Harness)

Mistral AI
Apply →
hybrid mid full-time Paris, FR

First indexed 11 Jun 2026

Description

We are seeking strong Software Engineers with cybersecurity experience to build and productionize our cybersecurity product offering. You will turn cutting-edge prototypes into robust, scalable services that power both our offensive and defensive security capabilities.

Cyber Harness Productionization

  • Build and productionize the cyber harness and service prototype, turning research into deployable solutions
  • Orchestrate red-team / blue-team agent loops: find vuln → patch → redeploy → re-test
  • Develop the context engineering that enables autonomous security workflows
  • Create connectors, worker scaling mechanisms, SDKs, and packaging that make demos into services

Mistral Stack Integration

  • Build on Mistral's corporate stack: Workflows (temporal-style orchestrator) and Vibe
  • Work with containers/Kubernetes to deploy and scale cyber capabilities
  • Leverage Mistral Models to power agentic security workflows
  • Migrate existing prototypes onto our production infrastructure

Service Engineering

  • Design and implement the engineering foundation that enables Applied to deploy at clients
  • Create the infrastructure Science can train against for continuous improvement
  • Ensure the cyber harness is robust, scalable, and maintainable
  • Collaborate with security and engineering teams to integrate cyber capabilities

About you

  • Strong software engineer with hands-on experience building cybersecurity products or tooling
  • Comfortable with agentic / LLM orchestration and context engineering
  • Builder mindset with a track record of shipping production-quality code
  • Experience with distributed systems and service architecture
  • Strong problem-solving abilities and attention to detail
  • Excellent communication skills and collaborative attitude

It would be ideal if you also have:

  • Red-teaming, offensive-tooling, or harness-building background
  • Experience with orchestration internals (Temporal, Workflows, or similar)
  • Prior experience building a 'harness for X/Y use case in cybersecurity' or similar agent system
  • Infrastructure knowledge: containers & Kubernetes to move fast
  • Experience with AI/ML systems in security contexts
  • Contributions to open-source security or orchestration tools
This listing is enriched and indexed by YubHub. To apply, use the employer's original posting: https://jobs.lever.co/mistral/49aa2bb7-5504-46d3-bc40-e1bcdb12cee2