Mistral AI
Technology
AppliedAI,Use-case,SoftwareEngineer(Harness)
Neural analysis suggests this role is
optimal for Mid+ candidates.
“Applied AI, Use-case, Software Engineer (Harness) at Mistral AI. Skills: Cybersecurity, Productionization, Agentic workflows. Build cyber harness. Productionize cyber harness”
Industry & Context.
Problem-solving; Troubleshooting
3 days per month in office
What They're Looking For.
Must Have
Software engineer with cybersecurity experience, Hands-on experience building cybersecurity products, Experience with agentic / LLM orchestration, Experience with context engineering, Track record of shipping production-quality code, Experience with distributed systems, Experience with service architecture
Nice to Have
Red-teaming background, Offensive-tooling background, Harness-building background, Experience with orchestration internals, Prior experience building a harness, Experience with AI/ML systems, Contributions to open-source security tools, Contributions to open-source orchestration tools
What You'll Do.
Productionize cyber harness
Turn research into solutions
Orchestrate red-team agent loops
Orchestrate blue-team agent loops
Develop context engineering
Enable autonomous security workflows
Create worker scaling mechanisms
Build on Mistral's corporate stack
Deploy cyber capabilities
Scale cyber capabilities
Leverage Mistral Models
Power agentic security workflows
Migrate existing prototypes
Design engineering foundation
Implement engineering foundation
Enable client deployments
Create infrastructure for training
Ensure harness is robust
Ensure harness is scalable
Ensure harness is maintainable
Collaborate with security teams
Collaborate with engineering teams
Integrate cyber capabilities
How You'll Work.
Team & Collaboration
Security teams; Engineering teams
Full Job Description
## Description About Mistral At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life. We democratize AI through high-performance, optimized, open-source and cutting-edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise needs, whether on-premises or in cloud environments. Our offerings include Vibe, the AI assistant for life and work. We are a dynamic, collaborative team passionate about AI and its potential to transform society. Our diverse workforce thrives in competitive environments and is committed to driving innovation. Our teams are distributed between France, USA, UK, Germany and Singapore. We are creative, low-ego and team-spirited. Join us to be part of a pioneering company shaping the future of AI. Together, we can make a meaningful impact. See more about our culture on https://mistral.ai/careers. Role summary 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. Your work will directly enable Applied to deploy at client sites while giving Science the infrastructure to train against. You'll orchestrate red-team/blue-team agent loops, build on Mistral's corporate stack, and create the connectors, worker scaling, and SDKs that transform demos into production-grade services. This is a unique opportunity to shape how AI-powered cybersecurity operates at scale. What you will do 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 sec
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