Staff Software Engineer, Web PlatformActive$320K

The opportunity

Claude. ai is Anthropic's flagship consumer product, spanning web, mobile, desktop, and browser extensions—and it's growing fast.

What you'll do

  • Improve developer velocity across the organization by reducing friction in: our build, deploy, and testing pipelines

  • Work on performance and reliability: identify and resolve latency issues, improve observability, and help establish high standards that the rest of the platform team can build on

  • Design and build shared UI components, libraries, and abstractions that: product teams across Anthropic use to ship consistently and efficiently on web and mobile

  • Partner closely with product engineering teams to understand their needs,: unblock them when possible, and shape platform investments around where the most impact is

  • Help maintain and evolve documentation and tooling that make the platform: approachable for engineers joining or building on top of it

  • Have strong practical skills in modern web technologies (React, TypeScript or: comparable frameworks) and experience designing or consuming APIs that serve frontend applications

What they're looking for

  • Have 5+ years of software engineering experience, with significant time spent: building shared platforms, developer tools, or infrastructure that other engineers rely on
  • Building shared component libraries, design systems or reusable UI infrastructure
  • API design and and client-server architecture patterns that balance: flexibility with consistency across client platforms
  • Performance optimization and latency reduction in production web applications
  • CI/CD, build systems, and/or deployment automation
  • Observability and monitoring (e.g. metrics, logging, tracing)