Senior & Staff Software Engineer, Continuous Integration (AI)

Location: London, UK. This role follows a hybrid policy, requiring staff to be in one of our offices at least 25% of the time. Visa sponsorship is available, with reasonable efforts to secure visas for successful candidates.

Salary: £325,000–£390,000 GBP annually.

Company

Anthropic is a public benefit corporation focused on creating reliable, interpretable, and steerable AI systems for the benefit of society.

What you will do

• Design and build highly reliable, scalable CI infrastructure for thousands of daily builds across multiple cloud providers.
• Develop intelligent test selection systems to reduce CI time while maintaining code quality.
• Build and improve incident response automation, including cluster load shedding and automatic recovery.
• Enhance 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 like Buildkite, Jenkins, or GitHub Actions.
• Experience with container orchestration at scale.
• Excellent communication skills and enjoyment in supporting internal partners.
• Strong focus on reliability and building resilient systems.
• Bachelor's degree in a related field or equivalent experience.

Nice to 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.

Culture & Benefits

• Work as a single cohesive team on large-scale, high-impact AI research efforts.
• Highly collaborative environment with frequent research discussions.
• Competitive compensation and benefits, optional equity donation matching.
• Generous vacation and parental leave, flexible working hours.
• Opportunity to contribute to steerable, trustworthy AI systems.