Senior & Staff Software Engineer, Continuous Integration (AI)

Location: London, UK. Hybrid policy: staff are expected to work from one of the offices at least 25% of the time, with some roles requiring more office attendance.

Annual salary: £325,000–£390,000 GBP

Company

Anthropic develops reliable, interpretable, and steerable AI systems intended to be safe and beneficial for users and society.

What you will do

• Design and build reliable, scalable CI infrastructure supporting thousands of daily builds across multiple cloud providers.
• Develop intelligent test selection systems that reduce CI execution time while maintaining code quality.
• Build 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.
• Support merge queue management, branching strategies, and developer-facing CI tooling.

Requirements

• 10+ years of relevant industry experience building and operating large-scale CI/CD systems.
• Deep experience with CI orchestration tools such as Buildkite, Jenkins, GitHub Actions, or similar.
• Experience with container orchestration at scale.
• Strong communication skills and an ability to support internal engineering partners.
• Bachelor’s degree or an equivalent combination of education, training, and experience in a relevant field.

Nice to have

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

Culture & Benefits

• Collaborative work across research, engineering, policy, and business functions.
• Flexible working hours and an office environment for collaboration.
• Generous vacation and parental leave.
• Competitive compensation and optional equity donation matching.
• Visa sponsorship is available, with immigration lawyer support, although sponsorship depends on the role and candidate.