Staff+ Software Engineer, Backend

Anthropic is looking for experienced, product-minded engineers to own the backend systems that power user experiences across our API, Claude Code, and Claude.ai. You'll independently scope complex, multi-month projects through ambiguous problem spaces and lead peers through technical and product decisions; you'll drive alignment with product, peer engineering teams, and research to identify capability gaps and translate frontier model improvements into shipped products.

Multiple teams are hiring:

• API Core: Build and scale the foundation of the Claude API
• API Capabilities: Bring frontier model capabilities to developers through the Claude API
• API Knowledge: Focus on transforming Claude into a true knowledge worker
• Developer Experience: Build products and tools to enable developers to harness the full power of LLMs
• API Agents: Build the infrastructure and APIs that enable developers to create powerful agentic applications
• Enterprise Foundations: Build the foundational systems that large organizations require before they can deploy AI at scale

Requirements:

• 8+ years of relevant experience as a backend or product engineer
• Strong coding fundamentals and experience working across backend systems, APIs, and integrations
• Experience leading complex, multi-month projects or teams as a tech lead or equivalent
• Skilled at driving alignment across technical and non-technical teams
• Take a product-focused approach to your work and care about building solutions that are robust, scalable, and easy to use

Strong candidates may also have experience with:

• Distributed systems, API design, and cloud infrastructure at scale
• Technical lead or architect on a product or API platform
• Designing and scaling APIs with a focus on developer experience, consistency, and reliability
• Building enterprise SaaS platforms, including permissions infrastructure, billing and pricing systems, or compliance frameworks

The annual compensation range for this role is $405,000-$485,000 USD.