Top Tech Jobs & Startup Jobs in Montreal

Build and maintain secure, scalable Flow Registry features for GitLab’s agentic platform using Python, LangChain, and LangGraph. Design GraphQL and REST APIs, improve automated testing, optimize PostgreSQL-backed applications, and collaborate across backend, frontend, product, UX, and AI teams. Participate in Tier 2 on-call support, troubleshoot production issues, improve observability, and contribute to responsible AI integration in GitLab’s remote, asynchronous environment.

Own lifecycle communications strategy for prospects, build and optimize automated email journeys, execute campaigns end-to-end (copy, segmentation, QA, testing, launch), collaborate cross-functionally, use data to drive improvements in engagement and funnel progression, and act as the email marketing SME for best practices and deliverability.

Lead and execute technology audits across cloud, application, and cybersecurity domains to support SOX compliance. Design and test IT general, application, and entity-level controls; perform risk-based planning, testing, and reporting; drive remediation with process owners; and apply data analytics, automation, and generative AI to improve audit quality and efficiency.

Build and maintain backend AI capabilities for GitLab Duo Chat: design flow components and agentic flows in Python/LangGraph, integrate LLMs and multi-agent orchestration, implement and maintain APIs in the Rails monolith, improve observability and reliability, and participate in on-call rotations and cross-functional collaboration to deliver safe, scalable AI chat features.

Design, build, and maintain People systems automations and integrations (Workato, Workday, Greenhouse, Slack) using production-quality code. Improve CI/CD, reliability, observability, and AI-driven automation (Claude, MCP). Serve as technical lead for People Technology, partner with stakeholders, and drive scalable, maintainable automation solutions.

Design, maintain, and extend abuse detection and prevention systems for GitLab's SaaS platform. Serve as a core maintainer of a Ruby on Rails monolith, build anomaly detection and agentic AI mitigations, automate abuse response, collaborate with peer engineering and security teams, and produce runbooks and operational documentation.

Build tooling, workflows, and guidance to make GitLab easier to deploy, validate, and operate across cloud-native and self-managed environments. Evolve deployment guidance, improve production-like ephemeral environments, and maintain consistent deployment artifacts and environment contracts across development through production.

Design, implement, and evolve complex backend features and architecture. Improve reliability, performance, and security at scale. Mentor engineers, participate in incident response, set backend standards, and integrate agentic AI into production workflows.

Design and implement backend and real-time features in the GitLab monolith for portfolio planning at scale. Optimize PostgreSQL performance, evolve APIs (GraphQL/REST), build capacity planning and work-item hierarchies, create proofs of concept, maintain automated tests, support safe rollouts with feature flags and observability, mentor contributors, and participate in on-call and production troubleshooting.

Serve as a trusted advisor to a portfolio of customers to drive adoption and measurable outcomes with GitLab. Provide deployment guidance, lead workshops and Centers of Excellence, translate product usage data into actionable recommendations, monitor KPIs, manage regular touchpoints per SLAs, and collaborate cross-functionally to align on customer success and expansion plans.