Staff+ Software Engineer, Backend

Location-based hybrid policy:

Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices.

For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, meaning that the range includes both the sales commissions/sales bonuses target and annual base salary for the role.

Annual Salary:

$405,000

—

$485,000 USD

Logistics

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.

You'll make architectural decisions that affect the reliability and scalability of systems serving hundreds of thousands of global users (including internal teams), and design processes that help your team operate effectively and never fail the same way twice - all while staying hands-on with the code and our models.

This flexible approach allows us to match talented engineers with the backend product efforts where they'll have the greatest impact and growth potential:

: You'll build and scale the foundation of the Claude API—the systems that deliver Claude's intelligence to every developer, from startups to enterprise.

You'll own the performance, reliability, and efficiency of our core serving path, ensuring users get the most speed and value from our models.

Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.

Have experience with distributed systems, API design, and cloud infrastructure at scale

Thrive in fast-paced environments and can navigate ambiguity to find the highest-leverage path forward

Strong Candidates May Also Have:

Served as a technical lead or architect on a product or API platform, owning both the technical vision and execution end-to-end