Engineering Manager, Sandbox (AI)

Location: Remote; locations include Paris, Zurich, Madrid, Amsterdam, Warsaw, Linz, Munich, London, and Berlin

Company

Mistral AI provides full-stack AI solutions spanning frontier models, developer tools, applications, and compute, including sovereign AI cloud infrastructure for European customers.

What you will do

• Lead the team building secure, isolated, network-controlled sandbox environments for AI agents and reinforcement-learning workloads.
• Build the isolation layer using microVMs or containers, namespaces, cgroups, seccomp, and snapshot and restore primitives.
• Own the security boundary for customer code that cannot be fully trusted.
• Scale environment creation, density, latency, and lifecycle management across thousands of concurrent environments.
• Design architecture and solve the hardest technical implementation problems while contributing directly to the code.
• Hire, coach, manage performance, define growth paths, and partner with Product Managers to turn research needs into shippable primitives.

Requirements

• 3+ years of people leadership, including hiring, coaching, honest feedback, and engineer development.
• 8+ years building backend or infrastructure systems.
• Deep knowledge of Linux internals, including namespaces, cgroups, seccomp, and virtualization; microVMs of the Firecracker class are preferred.
• Production experience shipping systems in Go.
• Understanding of network isolation at the packet level, beyond firewall rules.
• Strong performance engineering instincts, including understanding syscall costs and using profiling data.
• Experience partnering with product, design, and business teams to ship software used by real users.
• Low-ego, team-first approach and the ability to act as a technical force other engineers want to work alongside.

Culture & Benefits

• Collaborative, low-ego, team-spirited environment with teams distributed across Europe, North America, Asia, and the Middle East.
• Benefits vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, and meal and transportation allowances.
• Work on infrastructure for finance, healthcare, and public-sector customers running frontier models on European-jurisdiction infrastructure.