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.

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