Remote Ruby on Rails Backend Engineer

Devconnectplatform; Warszawa; Hybrid; PLN 248,000 - 372,000; Full time

Job summary

GitLab is hiring a Backend Engineer for the Change Record team within the Source Code stage. You will build secure, well-tested features using Ruby on Rails and GraphQL to support GitLab.com, self-managed instances, and GitLab Dedicated.

The role balances legacy constraints with new product development on a backend-focused stack. You’ll collaborate across teams, leverage AI agents where appropriate, and contribute to reliability, observability, and on-call efforts while delivering high-quality

Qualifications

• Backend experience building web apps and APIs.
• Proficient in Ruby and GraphQL.
• Knowledge of relational databases and caching.
• Experience with testing and code reviews.
• Strong English communication in remote settings.
• Experience using AI coding agents.

Responsibilities

• Develop secure, well-tested features with Rails & GraphQL.
• Design and maintain backend services and data models.
• Collaborate across teams and provide domain input.
• Use AI agents for scoped work while reviewing output.
• Improve reliability with monitoring and on-call participation.
• Share knowledge via code reviews and documentation.

Skills

Ruby

GraphQL

SQL

Data modeling

Caching

Backend testing

Git workflows

English proficiency

Delivery ownership

AI agents

Agent workflows

API design

Tools

Git

Rails

Job description

GitLab is hiring a Backend Engineer for the Change Record team within the Source Code stage. You will build secure, well-tested features using Ruby on Rails and GraphQL to support GitLab.com, self-managed instances, and GitLab Dedicated.

The role balances legacy constraints with new product development on a backend-focused stack. You’ll collaborate across teams, leverage AI agents where appropriate, and contribute to reliability, observability, and on-call efforts while delivering high-quality