Backend Engineer, AI Engineering: Duo Chat

About This RoleAI processing…

Key Responsibilities

• 1
  Develop secure, well-tested, and performant features and improvements for GitLab Duo Chat.
• 2
  Implement and extend agentic flows in Python using LangGraph, registered through the Flow Registry and served by the Duo Workflow Service.
• 3
  Integrate Chat capabilities with the GitLab Rails monolith, including its GraphQL application programming interface (API).
• 4
  Write maintainable code that meets our internal standards for a high-scale environment, including tests with every merge request.
• 5
  Review code within our Code Review Guidelines and respond promptly to contributions from people who don't work for GitLab.
• 6
  Identify technical debt and propose and implement solutions that improve the team's efficiency.
• 7
  Collaborate with Product Management, User Experience, and Frontend team members to improve product quality, security, and performance.
• 8
  Participate in Tier 2 or Tier 3 weekday, weekend, and occasional night on-call rotations to help troubleshoot product operations, security operations, and urgent engineering issues.

Requirements

• Professional experience with Python, including building and testing production services.
• Working proficiency with Ruby on Rails, or a willingness to learn it, since a meaningful part of Chat lives in the GitLab monolith.
• Exposure to, or strong interest in, building on top of large language models, including prompting, tool or function calling, evaluation, and the failure modes of non-deterministic systems.
• Experience designing and building APIs, including diagnosing and optimizing performance issues, and comfort working with well-documented third-party services.
• A security-minded development approach that applies secure coding guidelines early in the development process.
• Clear and concise written communication about technical problems and iterative solutions, which is essential in a remote, largely asynchronous environment.
• Manage work independently, organize priorities, and ask for help when an issue is taking longer than expected.
• Demonstrate GitLab's values by collaborating effectively in a fully remote, intensely iterative environment.
• Experience with LangGraph, LangChain, or a comparable agent orchestration framework.
• Experience with GraphQL and RSpec.
• Experience with the GitLab product as a user or contributor.
• Experience working on a remote, globally distributed team.

Perks & Benefits