Senior Staff API Platform Architect

Anthropic

York and North Yorkshire

Hybrid

GBP 150,000 - 210,000

Full time

14 days+
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Benefits offered by this job

Comprehensive health insurance
Dental and vision insurance
22 weeks parental leave
Flexible time off
Education stipend
Home office stipend
Relocation support
Commuter benefits
Meal service in office

Job summary

Anthropic is seeking a Senior Staff Software Engineer for the Claude Developer Platform to guide API engineering strategy and architecture at scale. You will drive multi-year direction across API Core, Capabilities, Knowledge, Distributability, and Agents, partnering with Research, Inference, Platform, and Safeguards to ensure reliability and growth.

You will mentor staff engineers, own major architectural decisions, and ship high-impact initiatives across multiple teams, shaping the Claude

Qualifications

  • 12+ years of engineering experience with a track record operating at Staff/Senior Staff level.
  • Ability to lead high-impact engineering initiatives spanning multiple teams.
  • Experience shaping technical strategy for large-scale API or distributed systems.

Responsibilities

  • Define and drive multi-year technical strategy for the Claude API across API Core, Capabilities, Knowledge, Distributability, and Agents.
  • Lead high-complexity initiatives and act as primary technical decision-maker for architectural choices.
  • Mentor and develop staff-level engineers across the org, collaborating with Research, Inference, Platform, Infrastructure, and Safeguards.

Skills

Distributed systems
API architecture
Technical leadership
Mentor staff engineers
Cross-functional collaboration
Python
TypeScript

Education

Bachelor's degree in related field

Tools

FastAPI
React
GCP
Kubernetes
Cloud Run
AWS
Azure
PostgreSQL
Vector Stores
Firestore
Prometheus
Grafana
Datadog

Job description

Anthropic is seeking a Senior Staff Software Engineer for the Claude Developer Platform to guide API engineering strategy and architecture at scale. You will drive multi-year direction across API Core, Capabilities, Knowledge, Distributability, and Agents, partnering with Research, Inference, Platform, and Safeguards to ensure reliability and growth.

You will mentor staff engineers, own major architectural decisions, and ship high-impact initiatives across multiple teams, shaping the Claude

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