Senior CI Engineer: Scalable Build & Test Platform

Anthropic; Greater London; Hybrid; GBP 325,000 - 390,000; Full time

Benefits offered by this job

Competitive compensation

Equity donation matching

Generous vacation and parental leave

Flexible working hours

Lovely office space

Job summary

Anthropic is seeking talented and experienced Software Engineers to join our Continuous Integration (CI) team within the Developer Productivity organization. The CI team is responsible for the infrastructure that enables hundreds of engineers to ship code safely and efficiently to production.

You will design and build reliable CI infrastructure, develop intelligent test selection, and improve incident response tooling across cloud providers.

Qualifications

• 10+ years of relevant industry experience building and operating large-scale CI/CD systems.
• Experience with CI orchestration tools (Buildkite, Jenkins, GitHub Actions, or similar).
• Excellent communication skills and enjoy supporting internal partners.

Responsibilities

• Design and build highly reliable, scalable CI infrastructure that supports thousands of daily builds across multiple cloud providers.
• Develop intelligent test selection systems that reduce CI time while maintaining code quality.
• Build and improve incident response automation, including cluster load shedding, automatic recovery, and observability tooling.
• Improve test infrastructure reliability through flake detection, quarantine systems, and test state management.

Skills

CI/CD

Developer productivity

Communication skills

Container orchestration

CI orchestration tools

Observability tooling

Education

Bachelor’s degree

Tools

Buildkite

Jenkins

GitHub Actions

Kubernetes

Job description

Anthropic is seeking talented and experienced Software Engineers to join our Continuous Integration (CI) team within the Developer Productivity organization. The CI team is responsible for the infrastructure that enables hundreds of engineers to ship code safely and efficiently to production.

You will design and build reliable CI infrastructure, develop intelligent test selection, and improve incident response tooling across cloud providers.