# Software Engineer, Web Platform

**Company:** [Anthropic](https://hotfix.jobs/companies/anthropic)
**Location:** San Francisco, CA
**Role:** Fullstack Engineering
**Salary:** $320k – $405k/yr
**Experience:** 5+ years
**Skills:** React, TypeScript, API Design, CI/CD, Observability, Performance Optimization, Design Systems, Frontend Infrastructure, Build Systems, Deployment Automation
**Posted:** 2026-08-04

> Build and evolve the shared web platform infrastructure, UI components, BFF APIs, and developer tooling that powers Claude.ai across web, mobile, and desktop surfaces at Anthropic. Requires strong React/TypeScript skills, a focus on developer experience, and 5+ years building platforms or infrastructure used by other engineers.

## Job Description

## Key Responsibilities
- 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.

## Minimum Qualifications
- Strong practical skills in modern web technologies (React, TypeScript or comparable frameworks) 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.
- 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.

## Preferred Qualifications
- 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 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).

## Compensation
Annual Salary: $320,000—$405,000 USD

## Education
- Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience.
- Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience.

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