About Mistral AI
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 are a pioneering company shaping the future of AI. Our comprehensive AI platform meets enterprise needs, whether on-premises or in cloud environments. Our offerings include le Chat, the AI assistant for life and work.
Role Summary
We are seeking passionate and skilled software engineers to join our team. As a Backend Engineer, you’ll contribute to the development of the core systems powering our three main products, AI Studio, Le Chat & Mistral Code, shaping how users and developers interact with our AI platform at scale.
Responsibilities
Depending on your skills and field of expertise, you will be involved in key components of our technology, including:
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Backend Development: Design, develop and maintain scalable, robust backend features and APIs using modern frameworks. Ensure high performance and reliability across our distributed systems. Contribute to systems powering authentication, billing, AI tooling, observability, connectors, and developer experience.
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System Architecture: Design and implement efficient, secure and scalable architectures that support our fast-growing products. Collaborate with infrastructure teams on deployment, monitoring, and performance optimization.
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Code Quality: Write clean, maintainable and well-documented code. Participate in code reviews and contribute to technical standards and best practices.
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Cross-functional Collaboration: Work closely with product managers, front-end engineers, designers and data/AI engineers to deliver end-to-end features. Partner with teams across AI Studio, Le Chat & Mistral Code to ensure consistent platform-wide experience.
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Problem-Solving & Innovation: Tackle complex engineering challenges, from distributed systems to AI product integration. Stay up-to-date with new technologies (e.g., AI/LLM integration, observability, or backend frameworks) and bring them into production when relevant.
About You
- Degree in Computer Science, Software Engineering, or equivalent practical experience.
- Proficiency in Python or another backend language (JavaScript/TypeScript, C#, Golang).
- Strong understanding of backend fundamentals: APIs, databases, caching, messaging systems and distributed architectures.
- Strong problem-solving abilities and attention to detail.
- Ownership mindset capable of shipping end-to-end features with minimal oversight.
- Excellent communication skills and collaborative attitude.
Now, it would be ideal if you had experience with:
- Front-end development (Typescript, React, NextJS…)
- Infrastructure management (Docker, CI/CD, Kubernetes, Helm, Terraform…)
- AI/ML engineering
- Observability and monitoring tools (Prometheus, Grafana, Datadog…)
- UX and product-centric mindset.
Hiring Process
- Introduction call – 45 min
- Live-coding interview – 45 min
- System Design interview – 45 min
- Hiring Manager interview – 30 min
- Deep Dive Interview (only for leads & staff engineers) – 60 min
- Culture-fit discussion – 30 min
- Reference checks
Our Culture
We're driven to build a strong company culture and are looking for individuals with solid alignment with the following:
- Reason with rigor
- Are you audacious enough?
- Make our customers succeed
- Ship early and accelerate
- Leave your ego aside
Engineering blog
Our first Engineering blog post is live, you can check it out here!
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