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xAIxAI

Member of Technical Staff - Sandbox Service

Build and maintain secure sandbox infrastructure that lets AI models execute code and interact with tools in controlled virtualized environments. The role requires expert Rust, C++, or Go skills, systems expertise, and experience with containers, virtualization, and networking.

About the job

Responsibilities

  • Build and maintain a secure, scalable sandbox system that gives AI models controlled access to computational environments.
  • Provision containers and virtual machines on large-scale clusters.
  • Enable models to run code, build software, interact with tools, and control applications with user interfaces.
  • Orchestrate large-scale jobs and resource scheduling at the cluster level.
  • Tune filesystem performance on compute nodes.
  • Support real-time code execution for user queries and reinforcement learning workloads involving interactive tool use.

Requirements

  • Expert knowledge of Rust, C++, or Go.
  • Familiarity with Python.
  • Deep experience with Linux or Windows systems; familiarity with both is a strong plus.
  • Experience with virtualization and containerization technologies such as cgroups, KVM, gVisor, and QEMU.
  • Solid knowledge of the networking stack.

Compensation and Benefits

  • Base salary: £107,000–£262,000 GBP.
  • Equity.
  • Comprehensive healthcare and dental coverage.
  • Cash plan.
  • Income protection.
  • Life insurance.
  • Various other discounts and perks.

Skills

Rust, C++, Go, Python, Linux, Windows, Virtualization, Containerization, Kvm, Gvisor, Qemu, Networking

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