Engineering Team Lead, Sandbox

🕒 September 23

🇫🇷 France – Remote

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 10%

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Mistral AI

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2023

🤖 Artificial Intelligence

☁️ SaaS

🏢 Enterprise

Artificial Intelligence • SaaS • Enterprise

Mistral AI is a company that builds frontier large language and generative AI systems, offering platforms, models, and services to help organizations develop, customize, and deploy AI agents and applications. They provide products like Vibe (an AI agent for long-horizon work and coding variants), Studio (tools to build, test, and run AI agents and apps), Forge (training, aligning, and evaluating custom models), and Compute (infrastructure for training and inference). They also offer APIs, models (e. g. , Mistral Medium 3. 5, Mistral Small 4, Mistral OCR 4, Voxtral TTS), enterprise services for model customization and deployment, and industry-specific solutions for finance, public sector, manufacturing, energy & utilities, and transportation. Mistral emphasizes on self-hosted and cloud-hosted deployment options, privacy-focused enterprise deployments, and provides frontier-scale infrastructure and expert services for building tailored AI solutions.

📋 Description

• Manage the team, including hiring, coaching, performance management, growth paths, and feedback • Spend approximately half of the time on architecture decisions and the team's hardest technical problems • Build the isolation layer using microVMs or containers, namespaces, cgroups, seccomp, and snapshot/restore primitives • Own the security boundary for untrusted customer code • Scale sandbox fleets to thousands of concurrent environments • Write Go and own architecture and difficult implementation decisions • Grow engineers and establish standards for ownership • Partner with Product Managers to turn frontier research needs into shippable primitives

🎯 Requirements

• 2+ years of real people leadership • Experience managing engineers, including hiring, coaching, providing honest feedback, and developing team members • Deep Linux internals knowledge, including namespaces, cgroups, seccomp, and virtualization • Ideally, experience with microVMs of the Firecracker class • Production experience shipping systems in Go • Understanding of network isolation at the packet level • Performance profiling and understanding of syscall costs • 8+ years building backend or infrastructure systems • Experience partnering with product, design, and business teams to ship software used by real users • Low-ego, team-first mindset

🏖️ Benefits

• Healthcare coverage • Parental leave • Retirement plans • Relocation support • Wellness programs • Meal allowances • Transportation allowances • Other location-specific perks

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