Backend Engineer, Source Code Experience (Ruby)

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software. * Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab. An overview of this role We're looking for a Backend Engineer to join our Source Code Experience team within GitLab's Create stage. You'll help make everyday source code workflows clear, reliable, and efficient for people working across GitLab projects. As artificial intelligence agents increasingly write and manage code alongside people, you'll build backend capabilities and interfaces that support trustworthy collaboration between people and agents. You'll work in one of GitLab's oldest and most complex product areas, using Ruby and GraphQL to improve critical source code experiences across GitLab.com, self-managed instances, and GitLab Dedicated. The Source Code group is responsible for the backend and frontend aspects of the product categories within Source Code. With support from experienced team members, you'll help maintain high reliability through performance and structured query language tuning, caching, rate limiting, testing, observability, and resiliency. You'll collaborate with product management, product design, testing, security, user experience research, technical writing, Gitaly, Code Review, and other Source Code teams to deliver reliable and performant systems. Learn more about the Create:Source Code teams in the GitLab Handbook. What you’ll do Develop secure, well-tested, performant features and improvements using Ruby and GraphQL. Work through complex requirements and legacy constraints to deliver clear solutions while protecting the reliability of this critical system. Design and maintain backend services, application programming interfaces, data models, and business logic that support intuitive source code workflows. Collaborate across functions and teams, both asynchronously and synchronously, and involve domain experts when their input will improve the outcome. Use artificial intelligence agents for well-scoped work when they can speed up delivery without sacrificing quality, and critically review their output. Write maintainable code that follows GitLab's standards and contribute to constructive code reviews. Help strengthen reliability by monitoring production health metrics, participating in Tier 2 on-call, troubleshooting incidents, contributing to root cause analysis, and improving observability and resiliency. Share knowledge through code review, technical documentation, and everyday collaboration while learning from others. What you’ll bring Professional experience building backend web applications, services, or application programming interfaces, with experience using Ruby and GraphQL. An understanding of relational databases, structured query language, data mod…