Senior Backend Engineer (Ruby), AI Engineering: Duo Agent Platform Tools
New
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GitLabDevSecOps AI
Remote, Canada; Remote, United KingdomFull-TimeSenior
Salary not disclosed
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Job Details
- Required Skills
- Backend DevelopmentGraphQLRuby on RailsRESTful APIs
Requirements
- Experience building and maintaining production applications with Ruby on Rails, including work with background jobs, APIs, and data models.
- Comfortable working across the stack in a mature codebase.
- Proficiency in designing or extending REST and/or GraphQL APIs with attention to scalability, maintainability, and backward compatibility.
- Familiarity with Python backends and/or Vue frontends is considered a plus.
- Proven ability to deliver secure, well-tested, and performant backend features.
- Experience with automated testing frameworks such as RSpec.
Responsibilities
- 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.
- Improve and extend automated testing, including RSpec and other frameworks, to strengthen quality, reliability, and developer feedback loops.
- Share standards, patterns, and learnings with other engineers, raising the bar for responsible AI integration and evidence-driven engineering across the team.
- Participate in Tier 2 on-call rotations to troubleshoot production issues, contribute to root cause analysis, and enhance observability and resiliency.
- Bring a sharp eye to the competitive landscape, helping us understand what it takes to keep GitLab’s MCP server best-in-class in an increasingly agentic world.
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