Backend Engineer (Ruby), AI Engineering: Duo Agent Platform Tools

What you'll do:

• Develop, ship, and maintain features and improvements for Agentic Tools across the GitLab monolith backend in a secure, well-tested, and performant way.
• Collaborate with Product Management, UX, frontend, backend, and AI specialists to refine requirements and deliver high-quality, iterative product enhancements.
• Design, implement, and review GraphQL, REST APIs and related backend logic, ensuring reliability, scalability, and clear contracts with frontend clients.

What you'll bring:

• Experience building and maintaining production applications with Ruby on Rails, including work with background jobs, APIs, and data models.
• Proficiency in designing or extending REST and/or GraphQL APIs with attention to scalability, maintainability, and backward compatibility.
• Strong practical experience working with AI tooling on a daily basis and designing AI-powered backend features.

About the team:

• Agent Tools is a new functional team within the Agent Execution group, initially consisting of three engineers across AMER and EMEA timezones.
• The whole Agent Execution group consists of 8+ engineers, with further teams focused on agent observability and executing agents on GitLab’s runners.
• The team partners with teams within the AI space and all over GitLab to ensure the Duo Agent Platform becomes the backbone of many AI features.