# Software Engineer, UI Platform

**Company**: Anthropic
**Location**: San Francisco, CA | New York City, NY
**Work arrangement**: hybrid
**Experience**: senior
**Job type**: full-time
**Salary**: $320,000-$405,000 USD
**Category**: Engineering
**Industry**: Technology
**Wikidata**: https://www.wikidata.org/wiki/Q116758847

**Apply**: https://job-boards.greenhouse.io/anthropic/jobs/4673416008
**Canonical**: https://yubhub.co/jobs/job_f14ee3e5-931

## 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.

## Skills

### Required
- software engineering
- UI platform
- shared components
- design-system-level abstractions
- backend-for-frontend (BFF) APIs
- build
- deploy
- observability systems
- developer experience
- React
- TypeScript
- Next.js
- APIs

### Nice to have
- performance optimization
- latency reduction
- CI/CD
- build systems
- deployment automation
- observability and monitoring