Staff Backend Engineer (AI), Verify

GitLab seeks a Staff Backend Engineer to shape and scale the core infrastructure behind GitLab CI while integrating AI into CI/CD workflows. The position emphasizes defining success metrics for AI-assisted features and building observability layers for production systems.

Key Responsibilities:

• Shape and scale GitLab CI backend infrastructure for performance and reliability
• Design and implement AI-powered features for Agentic CI, including agents, agentic flows, and LLM-backed tooling that integrates with GitLab's Duo Agent Platform
• Define measurable success criteria before building features
• Build instrumentation and observability dashboards for AI-assisted CI
• Drive performance improvements through data-driven experimentation
• Write secure, maintainable Ruby on Rails code in a large monolith
• Lead cross-functional technical work with Product, UX, and Infrastructure teams
• Share standards and patterns for responsible AI integration across the organization

Required Qualifications:

• Advanced proficiency with Ruby and Ruby on Rails
• Strong PostgreSQL skills (data modeling, query tuning, scaling)
• Hands-on high-traffic production systems experience
• Practical experience designing and shipping AI-powered backend features
• Data-driven engineering approach with hypothesis testing
• Observability patterns and tools familiarity
• Backend architecture expertise with secure design practices

Agentic CI features include:

• AI Pipeline Builder: Auto-creates pipelines for new projects
• Fix a Failing Pipeline: Automates pipeline troubleshooting at scale
• LLM-backed tooling integration
• Building safeguards and cost controls for AI-driven automation