AI Sandbox Platform Engineer – High-Performance Infra

Scale AI; Seattle, New York, San Francisco (WA, NY, CA); On-site; USD 180,000 - 225,000; Full time

Job summary

Scale AI is seeking a Software Engineer for the AI Infrastructure team to build and evolve our agent sandboxing platform, a secure, high-performance code execution layer powering agentic workflows across internal and customer-managed environments.

You’ll combine deep systems expertise with a strong focus on developer experience, partnering with internal teams to shape a roadmap and deliver end-to-end projects from design through deployment in a fast-paced setting.

Qualifications

• 4+ years of experience building high-performance systems software.
• Strong knowledge of Linux process isolation, memory management, cgroups and namespaces.
• Experience with containerization/virtualization tech (Docker, Firecracker, gVisor, QEMU, Kata Containers).
• Proficiency in Go, Rust, or C/C++.
• Obsessed with developer experience: API design, error propagation and clear docs.

Responsibilities

• Design and build the sandboxing platform, client library, and API surface for secure code execution across containerized and virtualized environments.
• Ensure strong isolation, security and reproducibility of execution across user sessions and workloads.
• Optimize for cold-start latency, memory footprint and resource utilization at scale.
• Drive down error rates through systematic debugging, monitoring and proactive fixes.
• Partner with internal teams to understand needs, debug issues and build tooling that serves their use cases.
• Respond to incidents and production issues with urgency, performing root cause analysis and preventive fixes.
• Help develop and maintain a product roadmap for sandboxing balancing immediate needs with long-term architecture.
• Lead architecture reviews and own projects end-to-end from design through deployment.

Skills

Linux internals

Developer experience

Performance optimization

Debugging

Ambiguity tolerance

Education

Tools

Docker

Kubernetes

Firecracker

gVisor

QEMU

Kata Containers

Go

Rust

C/C++

Job description

Scale AI is seeking a Software Engineer for the AI Infrastructure team to build and evolve our agent sandboxing platform, a secure, high-performance code execution layer powering agentic workflows across internal and customer-managed environments.

You’ll combine deep systems expertise with a strong focus on developer experience, partnering with internal teams to shape a roadmap and deliver end-to-end projects from design through deployment in a fast-paced setting.