# Software Engineer, Sandboxing

**Company**: Anthropic
**Location**: San Francisco, CA
**Work arrangement**: hybrid
**Experience**: senior
**Job type**: full-time
**Salary**: $320,000-$485,000 USD
**Category**: Engineering
**Industry**: Technology
**Wikidata**: https://www.wikidata.org/wiki/Q116758847

**Apply**: https://job-boards.greenhouse.io/anthropic/jobs/5440427008?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_f72a9d87-bbe

## Description

## Job Overview

We're seeking a Software Engineer to join our Sandboxing team at Anthropic. You'll work on building the isolation layer for our AI systems, ensuring they run safely and efficiently. Our mission is to create reliable, interpretable, and steerable AI systems that benefit society.

## Responsibilities

- Design, build, and operate the sandboxing infrastructure for untrusted, model-generated code and agent workloads at scale

- Improve sandbox startup time, density, and throughput, including snapshot and restore, checkpointing, and warm pools

- Strengthen isolation across compute, filesystem, and network, including egress controls and per-session credential handling

- Investigate and fix performance, reliability, and security issues at the kernel, hypervisor, and container runtime level

- Build monitoring, tracing, and debugging tools to analyze sandbox performance

- Collaborate with researchers to support reinforcement learning environments and evaluations

- Work with product and platform engineers to expose sandboxes as a dependable capability for Claude products and customers

- Partner with security teams to threat-model the platform and test, harden, and respond to escape and abuse scenarios

- Work with cloud providers on hardware and platform features for our workloads

- Share knowledge on systems programming and Linux internals, and help set technical standards for the team

## Requirements

- Software engineering experience in Linux systems programming, kernel development, or another low-level area

- Strong programming skills in at least one systems language such as Rust, C, C++, or Go

- Working knowledge of virtualization or container isolation technologies

- Understanding of Linux resource management, including namespaces, cgroups, scheduling, and memory management

- Experience profiling and debugging performance issues at the system level

- Ability to work in unfamiliar codebases and technical areas, and to ship practical solutions with measurable results

- Strong communication skills and a commitment to building safe, reliable systems

## Preferred Qualifications

- Experience building or operating a multi-tenant sandbox, serverless, or code execution platform

- Experience with microVMs, user-space kernels, or lightweight virtualization

- Experience with OS-level security hardening, including seccomp, LSMs, and threat modeling of untrusted code

- Experience with eBPF and kernel tracing tools

- Experience with Kubernetes and cloud infrastructure at scale

## Compensation

The annual compensation range for this role is $320,000-$485,000 USD.

## Logistics

- Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience

- Required field of study: A field relevant to the role

- Minimum years of experience: Correlates with internal job level requirements

- Location-based hybrid policy: 25% office time expected

- Visa sponsorship: Available

## Benefits

Anthropic offers competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space.

## Skills

### Required
- Linux systems programming
- kernel development
- systems languages (Rust, C, C++, Go)
- virtualization
- container isolation technologies
- Linux resource management
- performance profiling and debugging

### Nice to have
- microVMs
- user-space kernels
- lightweight virtualization
- OS-level security hardening
- eBPF and kernel tracing tools
- Kubernetes and cloud infrastructure at scale

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Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/anthropic/jobs/5440427008?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)