Backend Engineer (Ruby), Create: Change Record

Overview

Backend Engineer on the Change Record team within GitLab's Source Code stage, building a trustworthy record of what changed, why, and who or what made it, working in Ruby on Rails and GraphQL.

What you'll do

• Develop secure, well-tested, performant features and improvements using Ruby on Rails and GraphQL, among other technologies.
• Work through complex requirements and legacy constraints to deliver clear solutions while protecting the reliability of this critical system.
• Design and maintain backend services, APIs, 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 AI 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 need

• 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 modeling, caching, background processing, and backend performance practices.
• Experience with full-stack development to build and maintain user-facing workflows and their underlying systems.
• Experience writing backend unit and integration tests, with familiarity with the testing pyramid, Git, and collaborative code review processes.
• Clear written and spoken English communication skills, including sharing useful status updates in a remote, asynchronous environment.
• The ability to manage assigned priorities, work through ambiguity, take ownership of your work, and seek guidance when needed.
• Experience using AI coding agents to speed up software development while critically reviewing their output.

Nice to have

• Built agents or agent-based workflows that run in production, not just prototypes.

Details

• Remote, working from the United Kingdom or Poland.
• Poland base salary range: 248,000zł - 372,000zł (base salary only, excluding bonuses, equity, and benefits).
• Functional team works across Europe and North America with both synchronous and asynchronous collaboration.