Staff Software Engineer, Continuous Integration

We are seeking a talented and experienced Staff Software Engineer 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.

The CI team manages Anthropic's continuous integration system, which includes:

• CI infrastructure for automated testing and code quality assurance across our monorepo, designed to scale with rapid growth
• Test infrastructure that runs on Kubernetes clusters across multiple cloud providers, handling intelligent test selection, execution, and reporting for a large and complex test suite
• Merge queue management and complex branching strategies that ensure code quality at scale
• CI tooling and automation to improve developer productivity and reduce operational overhead

As a Staff Software Engineer, you will design and build highly reliable, scalable CI infrastructure that supports thousands of daily builds across multiple cloud providers. You will also develop intelligent test selection systems that reduce CI time while maintaining code quality.

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

Requirements:

• 10+ years of relevant industry experience building and operating large-scale CI/CD systems
• Deep experience with CI orchestration tools (Buildkite, Jenkins, GitHub Actions, or similar)
• Excellent communication skills and enjoy supporting internal partners
• Care deeply about reliability and building systems that 'never fail the same way twice'

Preferred qualifications include experience with merge queues and branch management at scale, test infrastructure, including intelligent test selection and flake management, and GitHub API and automation experience.

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.