Description
As a Software Engineer on the UI Platform team at Anthropic, you will be hands-on building the platform that other engineers depend on every day.scope of work includes 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 Claude.ai running smoothly across surfaces.
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.
Responsibilities:
- Design and build shared UI components, libraries, and abstractions that product teams across Anthropic use to ship consistently and efficiently on web and mobile
- Contribute to the BFF API layer that powers Claude.ai's client applications,thinking carefully about clean contracts, performance, and reliability at the boundary between frontend and backend
- 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
- 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
You may be a good fit if you:
- Have 5+ years of software engineering experience, with significant time spent building shared platforms, developer tools, or infrastructure that other engineers rely on
- Have strong practical skills in modern web technologies (React, TypeScript, Next.js) and experience designing or consuming APIs that serve frontend applications
- Care about developer experience and have a track record of building things that make other engineers more productive
- Have solid instincts around reliability, observability, and performance,and enjoy operationalizing those instincts in production systems
- Thrive in fast-paced, collaborative environments and enjoy working closely with cross-functional partners
- Pick up slack, even if it goes outside your job description
Strong candidates may also have experience with:
- Building shared component libraries or design systems for multiple surfaces (web, mobile, desktop)
- BFF architectures and API patterns that balance flexibility with consistency across client platforms
- Performance optimization and latency reduction in consumer-facing applications
- CI/CD, build systems, and deployment automation
- Observability and monitoring (metrics, logging, tracing)
- Working on AI/ML products or in rapidly evolving product environments
Candidates need not have:
- 100% of the skills needed to perform the job
- Formal certifications or education credentials
The annual compensation range for this role is $320,000-$405,000 USD.