Senior Ruby Backend Engineer for AI Integrations (Remote UK)

GitLab; United Kingdom; Remote; GBP 90,000 - 140,000; Full time

Job summary

GitLab is seeking a Senior Backend Engineer to design and build integrations that bring GitLab agents into tools and connect external AI solutions. You’ll own complex features end-to-end and shape how GitLab exposes its AI capabilities to internal and external users.

You’ll work across product, UX, frontend, backend, and AI specialists to deliver high-quality improvements, with a strong emphasis on secure backend design, testing, and scalable APIs in a remote-first environment.

Qualifications

• Experience building and maintaining production applications with Ruby on Rails.
• Proficiency in designing or extending REST or GraphQL APIs with scalability in mind.
• Strong SQL skills and familiarity with PostgreSQL.
• Experience identifying performance bottlenecks and optimizing code paths.
• Ability to collaborate asynchronously in a distributed team and learn new tech quickly.

Responsibilities

• Develop, ship, and maintain secure, well-tested, and performant external agent integrations across the GitLab monolith backend.
• Collaborate with Product Management, UX, frontend, backend, and AI specialists to refine requirements and deliver improvements.
• Design, implement, and review GraphQL and REST APIs with clear contracts for frontend clients.
• Improve automated testing, including RSpec and other frameworks, to strengthen quality and feedback loops.
• Share standards and patterns for responsible AI integration across the team.
• Participate in Tier 2 on-call rotations, troubleshoot production issues, and contribute to root cause analysis.
• Assess the competitive landscape and help GitLab build strong AI integrations as agentic tech evolves.

Skills

Ruby on Rails

SQL

REST APIs

GraphQL APIs

Performance optimization

Distributed teamwork

Tools

PostgreSQL

RSpec

Vue

Python

Job description

GitLab is seeking a Senior Backend Engineer to design and build integrations that bring GitLab agents into tools and connect external AI solutions. You’ll own complex features end-to-end and shape how GitLab exposes its AI capabilities to internal and external users.

You’ll work across product, UX, frontend, backend, and AI specialists to deliver high-quality improvements, with a strong emphasis on secure backend design, testing, and scalable APIs in a remote-first environment.