Engineering Team Lead, Mistral AI
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More information about location
Generative AI model developers
Open for applications
Generative AI model developers
501-1000 employees
Open for applications
More information about location
501-1000 employees
Company mission
To make frontier AI ubiquitous, and to provide tailor-made AI to all the builders.
Role
Who you are
- 2+ years of real people leadership. You have managed engineers — hired, coached, given honest feedback, and grown them. Hands-on contribution matters here, but this role is judged on the team you build and lead, not just the code you write
- Deep Linux internals: namespaces, cgroups, seccomp, virtualization — ideally microVMs of the Firecracker class
- You have shipped production systems in Go. Not dabbled. Shipped
- You understand network isolation at the packet level — not just firewall rules
- Performance instincts: you know what a syscall costs, and you have the profiles to prove you've cared
- 8+ years building backend or infrastructure systems
- You have partnered with product, design, and business teams to ship software that reached real users
- A low-ego, team-first mindset. We care less about your exact domain and more about whether you are the kind of technical force other engineers want to work alongside
What the job involves
- Mistral is building a sovereign AI cloud for Europe. Our customers in finance, healthcare, and the public sector run frontier models on European-jurisdiction infrastructure, and the Cloud Platform team builds the systems that make that possible — compute orchestration, Kubernetes, bare metal, storage, networking, and the datacenter fleet that runs it all
- We run it all on our own metal, our own network, our own datacenters — which means when something breaks, the fix is ours to write
- European Compute Units let enterprises commit to multi-year capacity on that infrastructure, and we are scaling toward a gigawatt of compute across Europe by 2030. You will design and ship the layer every sovereign AI deployment depends on and shape the team building it
- This is a people-leadership role from day one. You will manage the team — hiring, coaching, performance, growth paths, honest feedback — while staying close to the code: roughly half your time in architecture decisions and the hardest technical problems the team faces, the other half leading your squad. If you are looking for a senior IC role, this is not it
- AI agents don't run in browsers. They run in sandboxes — and you will lead the team building ours
- We build secure, isolated, network-controlled environments with snapshotting primitives, designed for AI agents and reinforcement-learning workloads. An RL training run doesn't need one environment; it needs thousands, created and destroyed every second. An agent needs to be sandboxed from the world while still feeling fast enough to be useful. That tension — airtight isolation, at fleet scale, at low latency — is the product
- Your customers are the people building the next generation of AI software on our infrastructure; the primitives you ship become the runtime their agents live in
- Build the isolation layer: microVMs or containers, namespaces, cgroups, seccomp, snapshot and restore
- Own the security boundary. Customers run code they didn't write and can't fully trust — your systems make that safe
- Scale to fleets: creation latency, density, and lifecycle management for thousands of concurrent environments
- Write Go alongside your team and own the architecture and the hardest implementation decisions
- Grow the engineers, not just the software — set the standard for ownership and coach people past their comfort zone
- Own people management for the team: hiring, performance, growth paths, and honest feedback
- Partner with Product Managers to turn frontier research needs into shippable primitives
Our take
Founded by Facebook AI researchers, Mistral AI focuses on developing open-source generative AI models to "make AI useful." It emerged in early 2023, quickly achieving a $260 million valuation.
Mistral features up to 176 billion parameters, and its open-source nature has sparked concerns about potential misuse. However, Mistral remains a formidable competitor in the AI landscape, challenging models from Google and Meta.
In 2025, Mistral secured a massive €1.7 billion funding round, raising its valuation to €11.7 billion. This Series B funding, led by European chip firm ASML, underscores significant interest in alternatives to ChatGPT and a push away from Silicon Valley dependence by European AI competitors.
Freddie
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 5 rounds)
Sep 2025
$1.9bn
SERIES C
Jun 2024
$525.6m
SERIES B
Total funding: $3.0bn
Company benefits
- Competitive bonus structure
- Equity
- Opportunities for professional growth and development
Company HQ
Villette, Paris, France
Leadership
Timothee Lacroix
(Co-Founder & CTO)Previously PhD and Software Engineer Intern at Facebook and Visiting Undergraduate at CAlab UCSD
Guillaume Lample
(Co-Founder & Chief Scientist)Research Student and Scientist at Facebook AI and Research Intern at Jane Street Capital
Arthur Mensch
(Co-Founder & CEO)Previously Staff Research Scientist at DeepMind, Post-doc researcher at École normale supérieure, Visiting Researcher at NYU Courant Institute of Mathematical Sciences and PhD Student at Inria
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