As a Senior Backend Engineer on the Flow Components functional team, you’ll help build GitLab’s Flow Registry, which provides reusable primitives for agentic flows built on the GitLab Duo Agent Platform
Your primary focus will be backend engineering in Python, using LangChain and LangGraph to develop secure, reliable, and scalable capabilities across the Duo Workflow Service and the GitLab monolith
You’ll also work across the stack when needed, bringing familiarity with JavaScript and frontend development to support the official GitLab Duo Agent Platform client, Duo CLI, and advocate for a solid user experience
Develop, ship, and maintain secure, well-tested, and performant Flow Registry features across the Duo Workflow Service and the GitLab monolith backend
Collaborate with Product Management, User Experience, frontend, backend, and artificial intelligence specialists to refine requirements and deliver iterative product improvements
Design, implement, and review GraphQL and REST application programming interfaces, related backend logic, and clear contracts with frontend clients
Improve automated testing with RSpec and other frameworks to strengthen quality, reliability, and developer feedback loops
Share standards, patterns, and lessons with other engineers to support responsible artificial intelligence integration and evidence-driven engineering
Participate in Tier 2 on-call rotations, troubleshoot production issues, contribute to root cause analysis, and improve observability and resiliency




Monitor the competitive landscape and help keep GitLab’s Flow Registry primitives and capabilities competitive within the agentic platform market
Benefits We offer benefits to manage your health, wealth, and well-being regardless of location
Flexibility in schedule to be there for life’s important moments
Equity compensation & Employee Stock Purchase Plan offered
Generous Paid Time Off
Openness to learning and applying transferable skills from related technologies or domainsExperience building and maintaining production Python applications with LangChain and LangGraph, including background jobs, application programming interfaces, and data modelsStrong SQL skills and familiarity with relational databases such as PostgreSQL, including efficient queries and data modelingComfort working across the stack in a mature codebase and addressing performance bottlenecks at the application and, when relevant, infrastructure layersFamiliarity with JavaScript and Vue frontend development, with an understanding of user experience principlesExperience designing and shipping artificial intelligence-powered backend features and integrations, with sound judgment about large language model limitations and responsible production useClear written and verbal communication skills, including experience writing technical proposals and documentation and collaborating in a remote, asynchronous, cross-functional environmentProficiency in designing or extending REST and GraphQL application programming interfaces with attention to scalability, maintainability, and backward compatibilityStudies have shown that people from underrepresented groups are less likely to apply to a job unless they meet every single qualification.

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📌 Senior Backend Engineer (Agent Developer: Flow Components - Python) (Quebec City)
🏢 GitLab
📍 Quebec City