Senior Backend Engineer, AI Engineering: Chat at GitLab

Department: AI Engineering

Language

Setup: Remote - Canada
Location: Scarborough, England
Type: Full-time
Level: senior
Posted: Jul 20, 2026

Description

GitLab is hiring a Senior Backend Engineer for its Duo Chat team's Chat Engine, responsible for building and maintaining Python and Ruby backend features for an AI-powered chat interface. The role focuses on flow components and agentic flows in the Flow Registry, integrating large language models and multi-agent orchestration, developing GraphQL and REST APIs, improving reliability and observability, and participating in Tier 2 on-call rotations. Candidates need significant production Python backend experience, AI and agentic-systems experience, Ruby on Rails proficiency or willingness to learn, API and SQL skills, and strong problem-solving and collaboration abilities. The position is remote globally.

Required Skills

Python
LangGraph
Ruby on Rails
GraphQL
REST
PostgreSQL
Multi-agent orchestration
pytest
RSpec

Additional Information

Required Previous Experiences: Significant experience building and maintaining production Python backends, including APIs, data models, and asynchronous or long-running workloads.
Practical experience designing and shipping AI-powered, agentic backend features, including large language model integration, tool or function calling, and multi-agent orchestration.
Working proficiency in Ruby on Rails, or a strong willingness to learn it.
Proficiency designing or extending REST or GraphQL APIs with attention to scalability, maintainability, and backward compatibility.
Strong SQL skills and familiarity with relational databases such as PostgreSQL, including efficient queries and data modeling.
Experience solving high-scope technical problems and advocating for quality, security, and performance improvements.
Preferred Qualifications: Hands-on experience with agent frameworks such as LangGraph or LangChain.
Translation Company Name: GitLab