Engineering Team Lead, Backend

Mistral AI is hiring an Engineering Team Lead, Backend in Paris, France. Level rates it ; you can apply on Mistral AI.

Level's read on this job

On Level's scale, this role is Works on AI ●●●○: the daily work is on AI products, without building the model.
The posting mentions Python, C# and Golang among its tools and skills.
Level classes it as a lead role.
Mistral AI has 234 other open roles on Level.

AI in this role

Lead a backend engineering team building core platform infrastructure that supports AI products and developer workflows.

PythonC#GolangTypeScriptFastAPIDjangoFlask

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 an Engineering Team Lead, you will build and develop the core platform that supports our AI products. This role combines technical execution with leadership, ensuring our systems work effectively for developers and users.

Your work will directly improve the developer experience, making it more efficient and intuitive. The team builds reliable infrastructure that supports our products and enables seamless integration for both internal and external users.

You will split your time between hands-on coding and strategic leadership, including project planning, stakeholder collaboration, and team growth. This balance allows you to drive technical solutions while guiding the team toward long-term success.

What You Will Do

Remove obstacles and create an environment where your team can focus on building solutions.
Translate product vision into technical reality, collaborating closely with the Product team.
Ensure applications are performant, stable, and responsive.
Uphold high code quality standards through reviews, testing, and automation.
Own the full software development process, from design to deployment.
Plan projects, including roadmaps, deadlines, and task allocation.
Collaborate with stakeholders across Engineering, Product, and Design.
Support team growth through hiring, onboarding, and mentorship.

What We're Looking For

Proficiency in Python and at least one web framework (FastAPI, Django, Flask).
Proficiency in C#, Golang, TypeScript and at least one web framework.
Experience with large-scale distributed systems.
Experience building and leading engineering teams.
Experience working with cross-functional teams, such as Product, Design, and Business.
Knowledge of databases, caching mechanisms, and messaging systems.
Strong problem-solving abilities and attention to detail.
Ownership mindset and ability to ship products end-to-end.
Excellent communication skills and a low-ego, team-first attitude.

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

Engineering Team Lead, 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.

Classification

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.

Key facts

Engineering Team Lead, Backend is an open job at Mistral AI.
Level rates this role AI Level 3 of 4: Works on AI.
The role is based in Paris.
The job was posted on September 3, 2026.
Seniority: lead.
Applications are handled by Mistral AI. Apply on Mistral AI

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

PythonC#GolangTypeScriptFastAPIDjangoFlask

Questions you could be asked

What's a project where you used Python hands-on?
Walk me through how you've used C# in your day-to-day work.
What are the limits of Golang that you've run into, and how did you work around them?
What's a project where you used TypeScript hands-on?
Walk me through how you've used FastAPI in your day-to-day work.

Adapt your resume

List these exact terms on your resume: Python, C#, Golang, TypeScript, and FastAPI. 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.

Get your CV reviewed before you apply

Send your CV and the role you want next. Your review arrives by email within 3 days.

Get a free CV review Check your resume with the ATS resume checker