Staff+ Software Engineer, Platform Acceleration

<div class="content-intro"><h2><strong>About Anthropic</strong></h2> <p>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.</p></div><h2 id="about-the-role">About the role</h2> <p data-lfile-container="6de50a80-2898-499b-a2b6-155f551641a1" data-pm-slice="1 1 []">As of May 2026, Claude authored <a href="https://www.anthropic.com/institute/recursive-self-improvement" target="_blank">more than 80% of the code we merge</a>. Writing a change is fast now, and the hard part is knowing it's correct and safe to ship. Platform Acceleration builds the internal tools that close that gap for Anthropic's product engineers, who own the Claude API, our SDKs, and the rest of the Claude Platform. We work like a small product team whose customers are other Anthropic engineers.</p> <p>We're looking for Staff+ engineers with a backend and infrastructure background who care about developer experience and have built tools other engineers rely on. We prefer candidates who can work from our San Francisco office, and we'll also consider candidates based in Seattle.</p> <h2 id="what-youll-do">What you'll do</h2> <ul data-lfile-container="6de50a80-2898-499b-a2b6-155f551641a1" data-pm-slice="3 3 []"> <li>Own the technical strategy and roadmap for your area, and make sure its hardest problems get solved, by you or through others</li> <li>Stay hands-on: design, build, and operate the tools that help Platform teams ship code faster</li> <li>Define what it takes to trust a change, including changes written by Claude, and build the tooling that holds that bar before and after merge</li> <li>Build agents that take on repetitive engineering work, such as diagnosing failures, fixing broken tests, and running migrations</li> <li>Embed wit