Staff Software Engineer, Continuous Integration

About the role

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. By joining this team, you'll have a direct impact on the velocity and reliability of Anthropic's research and product development.

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

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

You may be a good fit if you

• Have 10+ years of relevant industry experience building and operating large-scale CI/CD systems
• Have deep experience with CI orchestration tools (Buildkite, Jenkins, GitHub Actions, or similar)
• Are obsessed with developer productivity and reducing friction in the software development lifecycle
• Have experience with container orchestration at scale
• Have excellent communication skills and enjoy supporting internal partners
• Care deeply about reliability and building systems that "never fail the same way twice"

Strong candidates may also have

• Experience with merge queues and branch management at scale
• Experience with test infrastructure, including intelligent test selection and flake management
• Experience building CLI tools and developer-facing services
• GitHub API and automation experience

Deadline to apply: None. Applications will be reviewed on a rolling basis.