About the role:
We are looking for experienced software engineers to join our Platform organization. We build the foundational primitives that accelerate product development across Anthropic, and own infrastructure and systems that teams depend on to ship reliably and at scale - either internally or by hundreds of thousands of external global users and companies at all stages.
You'll independently scope complex, multi-month projects, drive cross-org alignment through ambiguous problem spaces, and make architectural decisions that shape how Anthropic builds and scales its products. You'll partner directly with research to productize cutting-edge capabilities, and will have lasting impact on the platform that hundreds of thousands of companies and internal/external engineers depend on every day.
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 backend product efforts where they'll have the greatest impact and growth potential.
What you'll do:
- Platform Acceleration: Architect and optimize critical development infrastructure (dev environments, observability, CI/CD pipelines) to maximize developer productivity. Partner with product teams to eliminate friction points in their workflow.
- Service Infra: Build and maintain core infrastructure like service mesh, observability systems, deployment pipelines, and shared libraries to enable reliable service operation at scale.
- Multicloud: Build and maintain infrastructure for operating across multiple cloud providers, focusing on cloud-agnostic tooling, cross-cloud networking, and multi-region deployments.
- Auth & Identity: Build and maintain critical infrastructure for identity and authentication across Anthropic's product suite, creating scalable solutions for user authentication, authorization, role-based access control, and single sign-on.
- Connectivity: Work to make Claude the most connected AI by owning the MCP proxy, OAuth, and token management. Contribute to the MCP spec and maintain official Python and TypeScript SDKs. Focus on reliability and enterprise trust for token refresh, admin controls, and proxy infrastructure.
- API Distributability: Lead the transformation of the Claude API into a cloud-native, managed product that runs wherever customers need it, cross-cloud and on Anthropic's own infrastructure, with enterprise-grade security, compliance, and operational capabilities.
- Platform Intelligence: Build training systems to adapt Claude to specific customer workloads, focusing on task-specific adaptation for intelligence, cost, and latency profiles. Work closely with research on training methods and agent platform teams on data paths.
You might be a good fit if you:
- Have a minimum of 8 years of practical experience as a backend or platform engineer building scalable distributed systems, ideally operating at tech lead level or equivalent.
- Have experience with distributed systems, cloud-native products, developer tools, or external developer-facing products.
- Have strong fundamentals in service-oriented architectures, networking, and systems design, ideally having owned both the technical vision and execution of a foundational platform system end to end.
- Are proficient in Python, Go, Rust, or similar systems languages.
- Have experience with cloud infrastructure (GCP, AWS, or Azure), container orchestration (Kubernetes), and/or multi-cloud networking.
- Take full ownership of your work—from design through deployment and operations.
- Can navigate ambiguity and make sound technical decisions independently, and have ideally operated in 0 to 1 and more mature team or company settings.
- Take a product-focused approach to platform work and care about building solutions that are robust, scalable, and easy to use.
- Care about building systems that other engineers love to use.