Senior Staff Software Engineer

<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><div data-qa="job-description"> <h2><strong>About the Role</strong></h2> <p>Anthropic’s Consumer Products team is hiring a Senior Staff Software Engineer to serve as the technical lead for Claude’s core chat experience on mobile — the surface where most people meet Claude for the first time. You’ll own the technical direction for our iOS and Android apps and shape how the chat interface evolves across mobile and web, working closely with product, design, and partner teams to deliver the most compelling way to talk to an AI.</p> <p>This is a deeply hands-on staff+ role. You’ll write code, set architectural direction, and make the hardest technical calls — but the real measure of success is influence: building the credibility and partnerships that let a growing organization move together. You’ll help us figure out not just how to build, but what to build, as the product and the models underneath it evolve in tandem.</p> <p>We care as much about craft as we do about capability. The right person obsesses over how the app feels — performance, polish, the small details that make software feel alive — and knows how to put systems in place so a fast-moving team can keep that bar high.</p> <h2><strong>In this role, you will:</strong></h2> <ul> <li><strong>Lead the chat experience: </strong>Own the technical strategy for Claude’s core chat surface on mobile, and influence how it evolves across web and other clients.</li> <li><strong>Build across the org: </strong>Partner with teams like Claude Code, Cowork, and Growth so their work lands seamlessly in the app — and so the app make