Senior Backend Engineer (Ruby on Rails) on GitLab's DevSecOps platform improving backend systems and AI integration. Collaborate cross-functionally to enhance knowledge management workflows.
Responsibilities
Lead backend architecture for Wiki, Pages, Markdown, and text editor capabilities used across GitLab.
Design and build AI agents that support planning and knowledge management workflows.
Architect MCP integrations that connect GitLab GraphQL APIs with external AI platforms and tools.
Drive improvements in reliability and performance across application code, PostgreSQL queries, Redis usage, and background jobs.
Develop and evolve GraphQL APIs that are clear for frontend engineers and support scalable product experiences.
Collaborate with frontend engineers, Product, UX, and Security to break down complex work into shippable iterations.
Mentor engineers through code review, technical discussions, and shared backend best practices.
Support incident response and production debugging, then turn learnings into lasting system improvements.
Requirements
Strong experience building and maintaining backend applications with Ruby on Rails, including core components such as ActiveRecord and Redis.
Experience designing and supporting GraphQL APIs with attention to usability, maintainability, and performance.
Knowledge of PostgreSQL query design, optimization, and scaling in high-traffic production systems.
Experience building or integrating AI agents, intelligent workflows, or related platform capabilities.
Familiarity with Model Context Protocol (MCP) or similar patterns for connecting APIs to external tools and platforms.
Ability to investigate production issues, debug complex systems, and improve reliability over time.
Experience leading technical decisions, mentoring engineers, and contributing to engineering standards across a team.
Clear communication and cross-functional collaboration skills, with openness to candidates who bring transferable experience from adjacent backend or platform work.
Benefits
Benefits to support your health, finances, and well-being
Flexible Paid Time Off
Team Member Resource Groups
Equity Compensation & Employee Stock Purchase Plan
Senior Go engineer building cross - platform endpoint agents and cloud microservices. Protecting Blackpoint Cyber customers through scalable cybersecurity software.
Senior Backend Engineer building distributed C/C++ vector databases for VAST Data’s AI infrastructure. Optimizing high - throughput, real - time analytics across massively scalable data systems.
Unreal Engine C++ developer building peer - to - peer XR streaming applications for Mawari’s decentralized 3D content platform. Developing UE4/5 plugins, SDK integrations, and real - time content delivery components.
Junior Java Developer completing paid Cúram training for PLATO, Canada’s Indigenous - owned software testing and technology services company. Building digital services for a multi - year government project.
.NET Developer maintaining legacy Windows and cloud applications for Capgemini, a global business and technology transformation partner. Improving automation, security, and technical debt across agile teams.
Backend Engineer building GitLab Duo Chat’s Python agentic runtime. Developing secure AI features and APIs for GitLab’s DevSecOps orchestration platform.