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Anthropic

Builds Claude AI models with a focus on safety

Staff+ Software Engineer - Claude App Infrastructure

Backend EngineeringUpdated on Nov 7
Full-time$320k - $485k /yr

About the Job

Requirements

  • Experience building distributed systems, infrastructure, or platform services at scale.
  • Comfort building cloud-native infrastructure on Google Cloud Platform, Amazon Web Services, or Microsoft Azure.
  • Experience with containers, sandboxing, or secure execution environments such as gVisor, Firecracker, or V8 isolates.
  • Ability to write clean, maintainable code in Python, Go, Rust, or a similar language.
  • Care about security, isolation, and building systems that fail safely.
  • A bachelor's degree or equivalent combination of education, training, and/or experience; a relevant field of study may be demonstrated through coursework, training, or professional experience.
  • Staff are expected to work in one of the offices at least 25% of the time; some roles may require more office time.

Responsibilities

  • Design and build sandboxed compute environments where Claude can safely execute code, access tools, and interact with external services.
  • Build state management systems for long-running agent tasks, handling checkpoints, recovery, and resumption across failures.
  • Develop authentication and authorization frameworks for delegated access so Claude can securely act on behalf of users.
  • Create observability and debugging tools for agent execution to understand what Claude did, why, and how to improve it.
  • Partner closely with product and research teams to define what is possible and ship it.

Desired Qualifications

  • Comfort with ambiguity and greenfield work where the candidate helps shape the architecture.
  • Interest in problems that do not have existing playbooks.
  • Experience building multi-tenant execution platforms or serverless infrastructure.
  • Background in security engineering, sandboxing, or isolation technologies.
  • Familiarity with workflow orchestration systems such as Temporal, Airflow, or Step Functions.
  • Experience with state machines, checkpointing, or durable execution patterns.
  • Low-level systems experience, including Linux internals, eBPF, or container runtimes.

About the Company

Anthropic

Builds Claude AI models with a focus on safety

Anthropic builds the Claude family of AI models and sells them to businesses, software developers, and consumers, with research on making AI safe and understandable at the center of its work. In 2024 it introduced the Model Context Protocol, an open standard for connecting AI assistants to outside apps and data that OpenAI and Google adopted the next year. People use the Claude app to write and analyze files, programmers hand coding tasks to Claude Code, and companies build Claude into their own products through its API. Anthropic earns money from subscriptions, business plans, and usage-based API fees. Siblings Dario and Daniela Amodei founded Anthropic in 2021 with other former OpenAI employees, and it is based in San Francisco.

Company size
5,001-10,000
Company stage
N/A
Total funding
$243.8B
Headquarters
San Francisco, CA
Founded
2021

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