Software Engineer, Backend (API Agents)

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