Software Engineer (Web Platform)

• As a Software Engineer on this team, you’ll be hands-on building the platform that other engineers depend on every day
• This means 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
• Your work will directly shape how fast teams across Anthropic can innovate—and how stable their experiences are when they do
• 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
• 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

Benefits

• Comprehensive health, dental, and vision insurance for you and your dependents
• Inclusive fertility benefits via Carrot Fertility
• 22 weeks of paid parental leave
• Flexible paid time off and absence policies
• Mental health support for you and your dependents
• Competitive salary and equity packages
• Optional equity donation matching at a 1:1 ratio, up to 25% of your equity grant
• Retirement plans with competitive matching
• Life and income protection plans
• $500/month flexible wellness and time saver stipend
• Commuter benefits
• Annual education stipend
• Home office stipends
• Relocation support for those moving for Anthropic
• Daily meals and snacks in the office- Have solid instincts around reliability, observability, and performance—and enjoy operationalizing those instincts in production systems
• Care about developer experience and have a track record of building things that make other engineers more productive
• Have strong practical skills in modern web technologies (React, TypeScript or comparable frameworks) and experience designing or consuming APIs that serve frontend applications
• 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
• Building shared component libraries, design systems or reusable UI infrastructure
• CI/CD, build systems, and/or deployment automation
• API design and and client-server architecture patterns that balance flexibility with consistency across client platforms
• Have 5+ years of software engineering experience, with significant time spent building shared platforms, developer tools, or infrastructure that other engineers rely on
• Observability and monitoring (e.g. metrics, logging, tracing)
• Performance optimization and latency reduction in production web applications
• We encourage you to apply even if you do not believe you meet every single qualification