Staff Software Engineer, Continuous Integration

About the role

Anthropic is looking for a Staff Software Engineer to join its Continuous Integration team within the Developer Productivity organization. The team builds and operates the CI infrastructure that enables hundreds of engineers to ship code safely and efficiently, directly impacting the velocity and reliability of Anthropic’s AI research and product development.

Key responsibilities

• Design and build highly reliable, scalable CI infrastructure supporting 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.
• Enhance test infrastructure reliability through flake detection, quarantine systems, and test state management.

Required profile

• 10+ years of experience building and operating large‑scale CI/CD systems.
• Deep experience with CI orchestration tools such as Buildkite, Jenkins or GitHub Actions.
• Strong focus on developer productivity and reducing friction in the software development lifecycle.
• Experience with container orchestration at scale (e.g., Kubernetes).
• Excellent communication skills and a collaborative mindset.
• Commitment to reliability and building systems that “never fail the same way twice”.

Required skills

• Buildkite
• Jenkins
• GitHub Actions
• Kubernetes
• Container orchestration
• CI/CD pipelines
• Merge queue management
• Test infrastructure and intelligent test selection
• CLI tool development
• GitHub API automation

What we offer

• Competitive salary (£325,000–£390,000) and benefits.
• Optional equity donation matching.
• Generous vacation and parental leave.
• Flexible working hours and hybrid office presence.
• Collaborative office space in London.