Staff+ Software Engineer, Platform

📋 Job Overview

Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.

🏢 About Anthropic

Anthropic is a public benefit corporation headquartered in San Francisco. We offer competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues.

🎯 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.

✅ Key Responsibilities

• Service Infra: Build and maintain the core infrastructure that powers Anthropic's engineering organization, from service mesh and observability systems to deployment pipelines and shared libraries.
• Platform Portability: Build and maintain the infrastructure that enables Anthropic to operate across multiple cloud providers, focusing on cloud-agnostic tooling, cross-cloud networking, and multi-region deployments.
• Platform Intelligence: Build and scale the foundation of the Claude API—the systems that deliver Claude's intelligence to every developer, from startups to enterprise.
• Billing Platform: Build and operate the infrastructure that turns product usage into revenue across everything Anthropic ships: Claude.ai, the Developer Platform, Claude Code, and whatever comes next.
• Platform Serving: Focus on transforming Claude into a true knowledge worker by ensuring the model has access to and understanding of the right knowledge at the right time.
• Agentic Systems: Build the infrastructure and APIs that let developers create powerful agentic applications on the Claude API — including Claude Managed Agents.
• Auth & Identity: Build and maintain the critical infrastructure and control interfaces that power identity and authentication across Anthropic's product suite.
• Platform Safety: Build the identity and verification product layer that enables safe model launches as Claude's capabilities expand.

📌 Required Qualifications

• 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
• Experience with distributed systems, cloud-native products, developer tools, or external developer facing products
• 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
• Proficient in Python, Go, Rust, or similar systems languages
• 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

⭐ Desirable Experience

None specified.

🎁 Benefits

The annual compensation range for this role is $405,000 - $485,000 USD.

Anthropic is a public benefit corporation headquartered in San Francisco. We offer competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues.

🛂 Visa & Eligibility

We do sponsor visas! However, we aren't able to successfully sponsor visas for every role and every candidate. But if we make you an offer, we will make every reasonable effort to get you a visa, and we retain an immigration lawyer to help with this.