Staff+ Software Engineer (Claude App Infrastructure)

• Claude App Infrastructure owns the reliability, experience, and agentic capabilities of claude.ai
• We are the platform team for Anthropic’s flagship consumer product — responsible for the serving architecture that keeps Claude available at scale, the conversation experience, and the infrastructure that lets every product team at Anthropic ship into claude.ai safely and fast
• When the product grows at hyper scale, we are the team that makes sure it feels the same — or better
• Beyond the foundation, we are building the agentic layer that turns claude.ai from a chat surface into an execution surface: task execution, personalization, browser use, server-side tools
• This is where the next generation of the product gets built — the primitives that let Claude act in the world, not just respond
• We believe reliability and velocity are the same problem, and our job is to build the systems that make both inevitable
• 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—enabling Claude to act on behalf of users securely
• Create observability and debugging tools for agent execution—understanding what Claude did, why, and how to make it better
• Partner closely with product and research teams to define what’s possible and ship it

Benefits

• Comprehensive health, dental, and vision insurance for you and your dependents
• Inclusive fertility benefits via Carrot Fertility
• 22 weeks of paid parental leave
• Flexible paid time off and absence policies
• Mental health support for you and your dependents
• Competitive salary and equity packages
• Optional equity donation matching at a 1:1 ratio, up to 25% of your equity grant
• Retirement plans with competitive matching
• Life and income protection plans
• $500/month flexible wellness and time saver stipend
• Commuter benefits
• Annual education stipend
• Home office stipends
• Relocation support for those moving for Anthropic
• Daily meals and snacks in the office

• Are comfortable with ambiguity—this is greenfield work, and you’ll help define the architecture
• Care deeply about security, isolation, and building systems that fail safely
• Write clean, maintainable code in Python, Go, Rust, or similar
• Have 10+ years of experience building distributed systems, infrastructure, or platform services at the hyper scale
• Comfortable building Cloud Native infrastructure on GCP, AWS, or Azure
• Want to work on problems that don’t have existing playbooks
• Have experience with containers, sandboxing, or secure execution environments (e.g., gVisor, Firecracker, V8 isolates)
• We require at least a Bachelor’s degree in a related field or equivalent experience
• We encourage you to apply even if you do not believe you meet every single qualification
• Experience building multi-tenant execution platforms or serverless infrastructure
• Experience with state machines, checkpointing, or durable execution patterns
• Familiarity with workflow orchestration systems (Temporal, Airflow, Step Functions)
• Background in security engineering, sandboxing, or isolation technologies
• Low-level systems experience (Linux internals, eBPF, container runtimes)