Backend Software Engineer
Role details
Job location
Tech stack
Job description
passionate and skilled software engineers to join our team. As a Backend Engineer, youll 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. Youll work on building reliable, high-performance backend systems and APIs that serve millions of users and developers. Your work will directly impact the developer and user experience, making it more engaging, efficient, and intuitive. We welcome engineers at all levels from fresh graduates to senior and staff engineers and who are eager to learn, collaborate and ship impactful products.What you will doDepending on your skills and field of expertise, you will be involved in key components of our technology, including:Backend Development Design, develop and maintain scalable, robust backend features and APIs using modern frameworks Ensure high performance and reliability across our distributed systems
Requirements
Contribute to systems powering authentication, billing, AI tooling, observability, connectors, and developer experienceSystem Architecture Design and implement efficient, secure and scalable architectures that support our fast-growing products Collaborate with infrastructure teams on deployment, monitoring, and performance optimizationCode Quality Write clean, maintainable and well-documented code Participate in code reviews and contribute to technical standards and best practicesCross-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 experienceProblem-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 relevantAbout You Degree in Computer Science, Software Engineering, or equivalent practical experience Proficiency in Python or another backend language (JavaScript/TypeScript, C#, Golang). Engineers are assessed in their preferred language during a live coding session 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 Team-oriented, low-ego mindset and curiosity for learningNow, it would be ideal if you had experience with: Front-end development (Typescript, React, NextJS...) or full-stack exposure Infrastructure management (Docker, CI/CD, Kubernetes, Helm, Terraform...) AI/ML engineering Observability and monitoring tools (Prometheus, Grafana, Datadog) UX and product-centric mindsetHiring 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 checksOur CultureWe'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 asideEngineering blogOur first Engineering blog post is live, you can check it out here !Location & RemoteThis role is based in one of our European offices (Paris, France and London, UK). We will only consider candidates who either reside or are open to relocating there. We strongly believe in the value of in-person collaboration and we encourage going to the office as much as we can (at least 3 days per week) to create bonds and smooth communication. Our remote policy aims
Benefits & conditions
to provide flexibility, improve work-life balance and increase productivity.What we offer Competitive salary and equity (stock-options) Health insurance Transportation allowance Sport allowance Meal vouchers Private pension plan Generous parental leave policy Visa sponsorshipWe may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
