Staff Software Engineer, Web Platform

<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><strong>About the role</strong></h2> <p><a href="http://Claude.ai" target="_blank">Claude.ai</a> is Anthropic's flagship consumer product, spanning web, mobile, desktop, and browser extensions—and it's growing fast. The Web Platform team owns the foundational layer that makes all of this possible: the shared infrastructure, components, APIs, and tooling that let every other product team at Anthropic ship quickly, reliably, and with confidence.</p> <p>As a Software Engineer on this team, you'll be hands-on building the platform that other engineers depend on every day. This means designing and shipping shared components and design-system-level abstractions, evolving the backend-for-frontend (BFF) APIs that power our client applications, and improving the build, deploy, and observability systems that keep <a href="http://Claude.ai" target="_blank">Claude.ai</a> running smoothly across surfaces. Your work will directly shape how fast teams across Anthropic can innovate—and how stable their experiences are when they do.</p> <p>This is a great fit if you care deeply about developer experience and want your engineering work to have outsized leverage: instead of shipping one feature, you're building the tools and systems that make dozens of features possible.</p> <h2><strong>Key responsibilities</strong></h2> <ul> <li>Improve developer velocity across the organization by reducing friction in our build, deploy, and testing pipelines</li> <li>Work on performance and reliability: identify and resolve latency issues, improve observability, and help establish high standards that