Software Engineer, UI Platform
Staff Software Engineer on the UI Platform team building accessible component primitives, automated testing infrastructure, and tooling that enables every product team to ship conformant experiences across Claude.ai surfaces. Requires 7+ years of experience with React/TypeScript and hands-on accessibility expertise.
Responsibilities
- Shape the definition of how AI products should be accessible
- Design and publish accessible component primitives, libraries, and abstractions used across Anthropic's web and mobile surfaces
- Integrate accessibility into product workflows so standards are met by default rather than retroactively remediated
- Develop automated testing and agentic scanning infrastructure that catches accessibility regressions across surfaces
- Partner with product teams to resolve accessibility issues and prioritize the most impactful work
- Maintain documentation and tooling that make accessible engineering approachable
Requirements
- 7+ years of software engineering experience, with significant time spent building accessible products, shared platforms, or developer tools that other engineers rely on
- Strong practical skills in modern web technologies (React, TypeScript or comparable frameworks)
- Hands-on familiarity with WCAG 2.2 AA, ARIA Authoring Practices, and HTML semantics
- Experience testing with assistive technology — screen readers (VoiceOver, NVDA, JAWS, TalkBack), keyboard-only navigation, magnification, voice control
- Care about developer experience and have a track record of building things that make other engineers more productive
- Solid instincts around accessibility, reliability, and quality—and enjoy operationalizing those instincts in production systems
- Thrive in fast-paced, collaborative environments and enjoy working closely with cross-functional partners
Nice to Haves
- Building shared component libraries, design systems or reusable UI infrastructure
- Accessibility testing — automated, manual, or with assistive technology such as screen readers
- Streaming or real-time UI accessibility — live regions, dynamic content, queueing announcements under assistive tech
- Native platform accessibility on iOS, Android, macOS, or Windows
- CI/CD, build systems, and/or deployment automation
- Working with WCAG standards and producing or consuming Accessibility Conformance Reports
Software Engineer, Claude Design
Build core frontend experiences for Claude Design, an AI-powered visual design tool. Own canvas architecture, real-time collaboration, and high-craft UI while collaborating with research and design teams.
UI Software Engineer, Claude.ai Consumer Product
Build and ship polished, high-performance user-facing features for Claude.ai's web app, working closely with designers and PMs on responsive interfaces, accessibility, and real-time interactions.
Design Engineer, Web
Design Engineer building and maintaining Anthropic's web properties like anthropic.com and claude.com, focusing on interactive experiences, design systems, and internal tools using Next.js and modern frontend tech. Requires strong frontend skills, CMS experience, and ability to prototype rapidly while collaborating with designers and engineers.