GitLab
Senior Backend Engineer (Ruby), AI Engineering: Duo Agent Platform Tools
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Senior Backend Engineer – GitLab Agent Tools
🚀 GitLab is the intelligent orchestration platform for DevSecOps. Empowering organizations to deliver secure, high-quality software faster.
Millions trust our technology—now help scale what AI agents can do in software development.
About This Role
As a Senior Backend Engineer on the GitLab Agent Tools team, you won’t just use AI tools—you’ll design and build systems that enable AI agents to interact with the entire software delivery lifecycle, far beyond code generation. This spans GitLab’s MCP server, future technologies, and API integrations that expose core platform capabilities to AI agents.
This is a high-visibility position at the intersection of GitLab's core backend and AI strategy. You’ll:
- Lead end-to-end complex feature development
- Establish architectural patterns for AI agent interactions with GitLab
- Collaborate closely with Agent Foundations, AI specialists, and adjacent engineering teams
Your Responsibilities
- Develop, deliver, and maintain secure, high-performance, well-tested features for Agent Tools in the GitLab backend monolith.
- Work alongside Product Management, UX designers, frontend engineers, and AI experts to translate requirements into iterative, high-impact solutions.
- Design, implement, and review REST and GraphQL APIs, ensuring:
- Scalability
- Reliability
- Clear backward-compatible contracts with frontend clients
- Enhance automated testing (RSpec, other frameworks) to boost quality, reliability, and feedback loops.
- Share best practices, patterns, and learnings with colleagues to advance responsible AI integration and evidence-based engineering.
- Engage in production troubleshooting through Tier 2 on-call rotations or RCA processes.
- Monitor the landscape to ensure GitLab’s MCP server remains best-in-class for AI agents.
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We’re Looking For
- Strong production experience with Ruby on Rails, including:
- Background job systems
- RESTful/API design
- Data modeling, security, and scalability challenges
- Familiarity with mature codebases (cross-stack familiarity a plus)
- Experience with Python backends or Vue frontend integration is helpful but not mandatory.
- Proficiency in architecting REST or GraphQL APIs with an eye for:
- Backward compatibility
- Extensibility
- Performance
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Note: We welcome candidates with diverse backgrounds. Passion and curiosity matter more than ticking every box—apply if you’re excited to help shape AI alignment with GitLab’s platform.
Why You’ll Love Working Here
GitLab fosters a high-performing culture driven by:
- Our values (see them here)
- Continuous knowledge exchange
- Remote flexibility
Create impact with: 🔹 Equity and stock (ESPP) 🔹 Unlimited PTO & season meals (powering structural balance) 🔹 Robust parental leave 🔹 Team building (virtual or in-person)
PS: We’re proud of being an equal-opportunity employer—protected characteristics (race, gender, disability, etc.) aren’t barriers here. If you’re eligible (legally, for location-specific roles), apply and let’s grow together.
[Apply Now] – Your career meets the future at GitLab!
👉 Fragmented job bounds? Not here: 100% remote, 50 languages, 90%+ self-directed.
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