Staff+ Software Engineer – Claude App Infrastructure

About the role

Anthropic is looking for a Staff+ Software Engineer to own the reliability and agentic capabilities of its flagship consumer product, Claude. The team builds the serving architecture, sandboxed compute environments, and execution primitives that let Claude act safely at scale.

Key responsibilities

• Design and build sandboxed compute environments for safe code execution, tool access, and external service interaction.
• Build state management systems for long‑running agent tasks, including checkpointing, recovery, and resumption across failures.
• Develop authentication and authorization frameworks for delegated access so Claude can act on behalf of users securely.
• Create observability and debugging tools for agent execution to understand actions and improve performance.
• Partner closely with product and research teams to define possibilities and ship solutions.

Required profile

• Experience building distributed systems, infrastructure, or platform services at scale.
• Comfort building cloud‑native infrastructure on GCP, AWS, or Azure.
• Experience with containers, sandboxing, or secure execution environments (e.g., gVisor, Firecracker, V8 isolates).
• Ability to write clean, maintainable code in Python, Go, Rust, or similar languages.
• Strong focus on security, isolation, and building systems that fail safely.
• Ability to work in ambiguous, green‑field projects and shape architecture.
• Interest in problems without existing playbooks.
• Experience building multi‑tenant execution platforms or serverless infrastructure.
• Background in security engineering, sandboxing, or isolation technologies.
• Familiarity with workflow orchestration systems (Temporal, Airflow, Step Functions).
• Experience with state machines, checkpointing, or durable execution patterns.
• Low‑level systems experience (Linux internals, eBPF, container runtimes).

Required skills

• Distributed systems
• Cloud platforms (GCP, AWS, Azure)
• Containers and sandboxing (gVisor, Firecracker, V8 isolates)
• Python
• Go
• Rust
• Authentication & authorization frameworks
• Observability and debugging tools
• Workflow orchestration (Temporal, Airflow, Step Functions)
• State management, checkpointing, durable execution
• Linux internals, eBPF, container runtimes
• Security engineering and isolation technologies