Mistral AISoftware Engineer, Backend
Mistral AI is hiring a Software Engineer, Backend in Paris, France. Level rates it ; you can apply on Mistral AI.
Level's read on this job
- Works on AI ●●●○ is how Level rates this software engineer role: the daily work is on AI products, without building the model.
- Tools and skills the posting cites include APIs, backend development and distributed systems.
- Level classifies it as a mid-level role.
- Level lists 234 other open roles at Mistral AI.
AI in this role
Build core backend systems and APIs that power an enterprise AI platform and developer tools.
About Mistral
Mistral provides full-stack AI solutions: from frontier models to developer tools, applications, and compute. We partner with enterprises tackling the hardest problems across high-stakes industries like finance, manufacturing, defense, healthcare, and the public sector, co-creating customized AI systems that they can run on their terms.
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 Europe, North America, Asia and the Middle East. We are creative, low-ego and team-spirited.
The Role
As a Backend Engineer on the Engineering team, you will build the core systems that power our AI platform. Our team develops the backend infrastructure and APIs that enable Studio, Vibe, and Vibe Code, shaping how millions of users and developers interact with our technology. Your work will directly affect the reliability, performance, and scalability of our products.
We focus on creating robust, high-performance systems that support authentication, billing, AI tooling, and developer experience. By joining us, you will contribute to a platform that enables both internal teams and external users to build and deploy AI applications.
What You Will Do
Design, develop, and maintain scalable backend features and APIs that power our AI platform.
Ensure high performance and reliability across distributed systems serving millions of users.
Build and improve systems for authentication, billing, AI tooling, and developer experience.
Design and implement secure, scalable architectures to support our growing products.
Collaborate with infrastructure teams on deployment, monitoring, and performance optimization.
Write clean, maintainable, and well-documented code.
Partner with cross-functional teams to deliver end-to-end features.
Solve complex engineering challenges and integrate new technologies into production.
What We're Looking For
Experience designing and building scalable backend systems and APIs.
Strong problem-solving skills and ability to tackle complex engineering challenges.
Experience with distributed systems and performance optimization.
Ability to write clean, maintainable, and well-documented code.
Experience with system architecture and secure, scalable design.
Strong collaboration skills and ability to work with cross-functional teams.
Experience with modern backend frameworks and technologies.
Eagerness to learn, iterate, and deliver products.
What We Offer
We offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance. Benefits vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks.
For the most up-to-date details on benefits available in your location, please refer to our Benefits page.
Privacy Policy
Your privacy matters to us. You can learn more about how we handle your personal data in our Applicant Privacy Policy.
How we rate this
Software Engineer, Backend at Mistral AI rates 65 out of 100 for how much of the daily work is AI. That makes it Works on AI (AI Level 3 of 4). The level is about AI in the job, not seniority.
Works on AI. The daily work is on AI products, without building the model.
- ●●●● Builds AI80 to 100
- ●●●○ Works on AI60 to 79
- ●●○○ Uses AI40 to 59
- ●○○○ Little AI0 to 39
Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.
Prepare for this job
Built from this posting and from similar jobs on Level.
Skills and AI tools this role asks for
Pay
- Typical software engineer job
- $167k
This posting doesn't list pay. Use the typical software engineer figure when pay comes up. See software engineer jobs
Questions you could be asked
- Tell me about a project where backend development was part of your work. What did you do?
- Tell me about a project where distributed systems was part of your work. What did you do?
- Tell me about a project where system architecture was part of your work. What did you do?
- Tell me about a project where api design was part of your work. What did you do?
- Walk me through how you've used APIs in your day-to-day work.
Adapt your resume
- List these exact terms on your resume: Backend Development, Distributed Systems, System Architecture, API Design, and APIs. An applicant tracking system matches the wording, not the idea.
- Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.
- Show where AI is part of your daily process, not a one-off project. This role expects it to be a running habit.
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