Software Engineer, Backend (API Agents) at Anthropic

Software Engineer, Backend

Anthropic

San Francisco, CA | New York City, NY | Seattle, WA

Salary: $300,000 - $320,000 USD

About Anthropic

Anthropic aims to create reliable, interpretable, and steerable AI systems with focus on safe, beneficial AI development.

Role Overview

Engineers will develop backend systems across Claude's API platform, serving developers and enterprises. The position involves distributed systems, product development collaboration, and no single team assignment. Candidates are matched based on impact potential.

Team Options

API Core: serving infrastructure, performance, reliability

API Capabilities: vision, tool use, computer use features

API Distributability: cloud-native deployment across infrastructure

API Knowledge: data access, retrieval systems

Developer Experience: tools, documentation, testing

API Agents: agentic infrastructure

Enterprise Foundations: permissions, security, compliance systems

Core Requirements

5+ years backend or product engineering experience with complex, multi-month projects

Proficiency in Python, Go, or similar backend languages

Modern cloud infrastructure expertise

Strong product sense and user experience thinking

Full ownership from design through operations

Independent decision-making in ambiguous environments

Cross-functional communication ability

Desired Experience

Billing/payments infrastructure

Containerization and sandboxed execution environments

Identity and access management systems

ML/AI systems and LLM inference knowledge

CI/CD systems

REST APIs and service-oriented architectures

React familiarity

Education: Bachelor's degree or equivalent experience required

Work Arrangement: Minimum 25% in-office time (hybrid)

Visa Sponsorship: Available with reasonable effort

Benefits

Competitive compensation

Optional equity matching

Generous leave policies

Flexible hours