Staff Software Engineer, Platform

About the role:

We are looking for backend / platform software engineers to join our Product Foundations org. We build foundational primitives that help accelerate product development across Anthropic. Some examples of what we own and maintain are our core sampling pipeline, our rate limiting platform, and our RAG platform.

We have multiple teams that are currently hiring. Team placement occurs after the interview process, taking into account your interests and experience alongside organizational needs. This flexible approach allows us to match talented engineers with the platform efforts where they'll have the greatest impact and growth potential:

Platform Accel: We work on maximizing the developer productivity of product engineers at Anthropic. You'll architect and optimize the critical development infrastructure that powers our AI product development, including dev environments, developer tooling, and CI/CD pipelines. You’ll partner closely with product teams to understand their development workflow and eliminate friction points. Your work will have an extraordinary multiplier effect, enhancing productivity across our entire product organization and accelerating our mission.

Service Infra: we build and maintain the core infrastructure that powers Anthropic's engineering organization, from service mesh and observability systems to deployment pipelines and shared libraries. Our work enables product teams to build and operate reliable services at scale, making us a critical force multiplier across the entire company.

Multicloud: We build and maintain the infrastructure that enables Anthropic to operate across multiple cloud providers. We focus on cloud-agnostic tooling, cross-cloud networking, and multi-region deployments.

Auth & Identity: We build and maintain the critical infrastructure that powers identity and authentication across Anthropic's product suite. We work closely with product teams, security, support, and trust & safety as customers. We create scalable solutions for user authentication, authorization, role-based access control, and single sign-on that form the backbone of our company's identity management operations. We maintain a user-centric approach, building reliable systems that our users and company can depend on as we tackle complex challenges at the intersection of security, scalability, and user experience.

Connectivity: We build the infrastructure that enables Claude to safely interact with the outside world through the use of tools. Our team owns the platform that provides secure, isolated execution environments as well as the infrastructure that connects Claude to external services via the Model Context Protocol (MCP). You'll work on challenging problems at the intersection of security and capability: designing sandboxes that are both secure and performant, building reliable MCP infrastructure, and expanding our platform for enterprise deployments. We collaborate closely with product teams across Claude.ai, API, and Claude Code to deliver the execution capabilities that make Claude genuinely useful for real-world tasks. Relevant experience includes containerization, secure execution environments, and developing for enterprise requirements.

Responsibilities:

• Build and scale platform components to handle Anthropic’s rapid growth
• Design and architect platform components that are composable and deliver value for a variety of use cases
• Collaborate closely with product teams to understand their needs and build platform capabilities that accelerate their feature delivery
• Make build vs buy decisions, evaluating and implementing 3rd party solutions when most impactful
• Set technical direction and vision for various product and platform features
• Partner with research to quickly prototype and launch new capabilities based on research breakthroughs

You might be a good fit if you: