Member of Technical Staff - Sandbox Service

X AI
London
Workplace: HybridFull timeFunction: Software EngineeringSkills: ["Communication","Teamwork","Problem-solving"]

Deeply technical, hands-on role building and maintaining the Sandbox service for xAI. Work across the full stack to enable secure, scalable computation environments for models, with emphasis on Rust/C++/Go, Python, Linux/Windows systems, and virtualization tech. Collaborate with a small, mission-driven team to ship reliable, high-performance infrastructure for training and product workloads.

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FursaFursa
X AI
X AI
8 months ago

Member of Technical Staff - Sandbox Service

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 19 hours agoStatus: Live

Job Summary

Deeply technical, hands-on role building and maintaining the Sandbox service for xAI. Work across the full stack to enable secure, scalable computation environments for models, with emphasis on Rust/C++/Go, Python, Linux/Windows systems, and virtualization tech. Collaborate with a small, mission-driven team to ship reliable, high-performance infrastructure for training and product workloads.
Location: London
Workplace: Hybrid
Employment Type: Full time
Job Function: Software Engineering

Key Responsibilities

  • •Contribute to design, development, and maintenance of the Sandbox service infrastructure for model training and inference.
  • •Develop and optimize components in Rust/C++/Go with Python for tooling and automation.
  • •Work on large-scale cluster orchestration, resource scheduling, and filesystem performance tuning.
  • •Collaborate with team members across offices (London and Palo Alto) to coordinate releases and diagnose issues.
  • •Participate in system design discussions and deliver reliable, maintainable code for production use.

Pay and Benefits

Perks:MedicalVisionDental401kLife Insurance

Key Requirements

  • •Must have strong experience with at least one of: Rust, C++, or Go; familiarity with Python.
  • •Deep experience with either Linux or Windows systems; familiarity with both is a plus.
  • •Experience with virtualization/containerization technologies (e.g., cgroups, KVM, gVisor, QEMU).
  • •Solid knowledge of the networking stack and distributed systems concepts.
  • •Excellent communication skills and ability to work in a fast-moving environment.
Experience:AIDistributed systemsInfrastructure
Skills:CommunicationTeamworkProblem-solving
Languages:English
Tech Stack:RustC++GoPythonLinuxWindowsKVMGVisorQEMUCgroups

Company Brief

X AI
Develops advanced artificial intelligence models and research aimed at building safe, general AI and understanding the fundamental nature of the universe. Focuses on large-scale AI systems, research publications, and building foundational AI capabilities.
Industry: AI & Machine Learning
Company Size: Medium (51 to 250 employees)
Growth: Early Stage Startup
Headquarters: San Francisco, United States
Founded: 2023
Website